forked from enlightenment/efl
parent
2fa1f8c3d5
commit
fc80ec34c2
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@ -7,7 +7,11 @@
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*
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* @ref Example_Eet_Data_Nested
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*
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* @ref Example_Eet_Data_File_Descriptor
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* @ref Example_Eet_Data_File_Descriptor_01
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*
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* @ref Example_Eet_Data_File_Descriptor_02
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*
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* @ref Example_Eet_Data_Cipher_Decipher
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*
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* <a href="examples.html">List of examples</a>
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*/
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@ -41,8 +45,140 @@
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*/
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/**
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* @page Example_Eet_Data_File_Descriptor File descriptor data example
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* @page Example_Eet_Data_File_Descriptor_01 File descriptor data example
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*
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* @includelineno eet-data-file_descriptor.c
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* @example eet-data-file_descriptor.c
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* @includelineno eet-data-file_descriptor_01.c
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* @example eet-data-file_descriptor_01.c
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*/
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/**
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* @page Example_Eet_Data_File_Descriptor_02 File descriptor data example, with Eet unions and variants
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*
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* This is an example much like the one shown in @ref
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* eet_data_file_descriptor. The difference is that here we're
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* attaining ourselves to two new data types to store in an Eet file
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* -- @b unions and @b variants. We don't try to come with data
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* mapping to real world use cases, here. Instead, we're defining
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* 3 different simple structures to be used throughout the example:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip typedef struct _Example_Struct1
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* @until typedef struct _Example_Struct3
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* @skip struct _Example_Struct1
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* @until int body
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* @until };
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*
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* To identify, for both union and variant data cases, the type of
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* each chunk of data, we're defining types to point to each of those
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* structs:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip typedef enum _Example_Data_Type
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* @until ;
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* @skip enum _Example_Data_Type
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* @until };
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*
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* We have also a mapping from those types to name strings, to be used
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* in the Eet unions and variants @c type_get() and @c type_set() type
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* identifying callbacks:
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* @skip struct
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* @until };
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*
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* In this example, we have no fancy hash to store our data into
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* profiles/accounts, but just two lists for union and variant data
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* nodes:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip typedef struct _Example_Lists
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* @until typedef struct _Example_Lists
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* @skip struct _Example_Lists
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* @until };
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*
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* Let's begin with our unions, then, which look like:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip typedef struct _Example_Union
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* @until typedef struct _Example_Union
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* @skip struct _Example_Union
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* @until };
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*
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* The first interesting part of the code is where we define our data
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* descriptors for the main lists, the unions and all of structures
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* upon which those two depend.
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip declaring types
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* @until _union_descriptor);
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* The code for descriptors on @c Example_Struct1, @c Example_Struct2
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* and @c Example_Struct3 is straightforward, a matter already covered
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* on @ref eet_data_file_descriptor. What is new, here, are the two
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* type matching functions for our unions. There, we must set the @c
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* data pointer to its matching type, on @c _union_type_set and return
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* the correct matching type, on @c _union_type_get:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip union type_get()
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* @until _union_type_set
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* @until _union_type_set
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*
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* With the #EET_DATA_DESCRIPTOR_ADD_MAPPING calls, which follow, we
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* make the the link between our type names and their respective
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* structs. The code handling actual data is pretty much the same as in
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* @ref eet_data_file_descriptor -- one uses command line arguments to
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* enter new data chunks (or just to visualize the contents of an Eet
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* file), signalling if they are unions or variants. One must also
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* pass the type of the data chuck to enter, with integers 1, 2 or
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* 3. Then, come the fields for each type:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip Usage
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* @until argv
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*
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* Variants are very similar to unions, except that data chunks need
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* @b not contain previously allocated space for each of the possible
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* types of data going in them:
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* @dontinclude eet-data-file_descriptor_02.c
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* @skip typedef struct _Example_Variant
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* @until typedef struct _Example_Variant
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* @skip struct _Example_Variant_Type
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* @until };
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* @until };
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*
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* The code declaring the data descriptors and handling the data is
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* very similar to the unions part, and is left for the reader to
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* check for him/herself. The complete code of the example follows.
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*
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* @includelineno eet-data-file_descriptor_02.c
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* @example eet-data-file_descriptor_02.c
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*/
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/**
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* @page Example_Eet_Data_Cipher_Decipher Eet data cipher/decipher example
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*
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* In this example, we exemplify the usage of eet_write_cipher() and
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* eet_read_cipher(). For it to work, <b>make sure</b> to have your
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* Eet installation with a ciphering backend enabled.
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*
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* We start by defining the information to record in an Eet file (@c
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* buffer), the key to cipher that (@c key) and a dummy wrong key to
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* try to access that information, later (@c key_bad).
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* @dontinclude eet-data-cipher_decipher.c
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* @skip buffer =
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* @until bad =
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*
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* After opening our file, we simply use the first cited function to
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* write our string ciphered:
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* @dontinclude eet-data-cipher_decipher.c
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* @skip eet_open
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* @until eet_close
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*
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* Then, after closing it on purpose, we open it again, to retrieve
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* the encrypted information back, in a readable format:
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* @skip eet_open
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* @until eet_close
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* @until eet_close
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*
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* Note that we do it twice, being the last time with the wrong
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* key. In this last case, if the information is read back and matches
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* the original @c buffer, something wrong is going on (we made it to
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* fail on purpose). The former access is OK, and must work.
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*
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* What we do in sequence is just to delete the file. The complete
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* code of the example follows.
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*
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* @includelineno eet-data-cipher_decipher.c
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* @example eet-data-cipher_decipher.c
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*/
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@ -7,7 +7,7 @@ AM_CPPFLAGS = \
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-I$(top_srcdir)/src/lib \
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@EINA_CFLAGS@
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pkglib_PROGRAMS = eet_basic eet_file eet_data_simple eet_data_nested eet_data_file_descriptor
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pkglib_PROGRAMS = eet_basic eet_file eet_data_simple eet_data_nested eet_data_file_descriptor_01 eet_data_file_descriptor_02 eet_data_cipher_decipher
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eet_basic_SOURCES = eet-basic.c
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eet_basic_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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@ -21,9 +21,14 @@ eet_data_simple_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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eet_data_nested_SOURCES = eet-data-nested.c
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eet_data_nested_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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eet_data_file_descriptor_SOURCES = eet-data-file_descriptor.c
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eet_data_file_descriptor_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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eet_data_file_descriptor_01_SOURCES = eet-data-file_descriptor_01.c
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eet_data_file_descriptor_01_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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eet_data_file_descriptor_02_SOURCES = eet-data-file_descriptor_02.c
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eet_data_file_descriptor_02_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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eet_data_cipher_decipher_SOURCES = eet-data-cipher_decipher.c
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eet_data_cipher_decipher_LDADD = $(top_builddir)/src/lib/libeet.la @EINA_LIBS@
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filesdir = $(datadir)/$(PACKAGE)/examples
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files_DATA =
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eet-file.c \
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eet-data-simple.c \
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eet-data-nested.c \
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eet-data-file_descriptor.c
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eet-data-file_descriptor_01.c \
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eet-data-file_descriptor_02.c \
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eet-data-cipher_decipher.c
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endif
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@ -0,0 +1,119 @@
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/*
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* build: gcc -o eet_data_file_cipher_decipher eet-data-file_cipher_decipher.c `pkg-config --cflags --libs eet eina`
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*/
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#include <Eina.h>
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#include <Eet.h>
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#include <stdio.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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int
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main(void)
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{
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const char *buffer = "Here is a string of data to save !";
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const char *key = "This is a crypto key";
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const char *key_bad = "This is another crypto key";
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char *file = strdup("/tmp/eet_cipher_example_XXXXX");
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Eet_File *ef;
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char *test;
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int size;
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eet_init();
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if (!(file = tmpnam(file)))
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{
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fprintf(
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stderr, "ERROR: could not create temporary file (%s).\n", file);
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goto panic;
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}
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/* Crypt an eet file. */
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ef = eet_open(file, EET_FILE_MODE_WRITE);
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if (!ef)
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{
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fprintf(
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stderr, "ERROR: could not access file (%s).\n", file);
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goto error;
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}
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if (!eet_write_cipher(ef, "keys/tests", buffer, strlen(buffer) + 1, 0, key))
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{
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fprintf(
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stderr, "ERROR: could not access file (%s).\n", file);
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goto error;
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}
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eet_close(ef);
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/* Decrypt an eet file. */
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ef = eet_open(file, EET_FILE_MODE_READ);
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if (!ef)
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{
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fprintf(
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stderr, "ERROR: could not access file (%s).\n", file);
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goto error;
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}
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test = eet_read_cipher(ef, "keys/tests", &size, key);
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if (!test)
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{
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fprintf(
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stderr, "ERROR: could decript contents on file %s, with key %s.\n",
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file, key);
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goto error;
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}
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if (size != (int)strlen(buffer) + 1)
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{
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fprintf(
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stderr, "ERROR: something is wrong with the decripted data\n");
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goto error;
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}
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if (memcmp(test, buffer, strlen(buffer) + 1) != 0)
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{
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fprintf(
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stderr, "ERROR: something is wrong with the decripted data\n");
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goto error;
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}
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eet_close(ef);
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/* Decrypt an eet file, now using our BAD key!! */
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ef = eet_open(file, EET_FILE_MODE_READ);
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if (!ef)
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{
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fprintf(
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stderr, "ERROR: could not access file (%s).\n", file);
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goto error;
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}
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test = eet_read_cipher(ef, "keys/tests", &size, key_bad);
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if (size == (int)strlen(buffer) + 1)
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if (memcmp(test, buffer, strlen(buffer) + 1) == 0)
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{
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fprintf(
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stderr, "ERROR: something is wrong with the contents of %s, as"
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" we accessed it with a different key and it decripted our"
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" information right.\n", file);
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goto error;
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}
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eet_close(ef);
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error:
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if (unlink(file) != 0)
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{
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fprintf(
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stderr, "ERROR: could not unlink file (%s).\n", file);
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}
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panic:
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eet_shutdown();
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}
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@ -0,0 +1,941 @@
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/*
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* build: gcc -o eet_data_file_descriptor_02 eet-data-file_descriptor_02.c `pkg-config --cflags --libs eet eina`
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*/
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#include <Eina.h>
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#include <Eet.h>
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#include <stdio.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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typedef enum _Example_Data_Type Example_Data_Type;
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typedef struct _Example_Variant_Type Example_Variant_Type;
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typedef struct _Example_Variant Example_Variant;
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typedef struct _Example_Union Example_Union;
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typedef struct _Example_Struct1 Example_Struct1;
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typedef struct _Example_Struct2 Example_Struct2;
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typedef struct _Example_Struct3 Example_Struct3;
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typedef struct _Example_Lists Example_Lists;
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enum _Example_Data_Type
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{
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EET_UNKNOWN = 0,
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EET_STRUCT1,
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EET_STRUCT2,
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EET_STRUCT3
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};
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struct
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{
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Example_Data_Type u;
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const char *name;
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} eet_mapping[] = {
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{ EET_STRUCT1, "ST1" },
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{ EET_STRUCT2, "ST2" },
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{ EET_STRUCT3, "ST3" },
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{ EET_UNKNOWN, NULL }
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};
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struct _Example_Struct1
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{
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double val1;
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int stuff;
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const char *s1;
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};
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struct _Example_Struct2
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{
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Eina_Bool b1;
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unsigned long long v1;
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};
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struct _Example_Struct3
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{
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int body;
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};
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struct _Example_Union
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{
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Example_Data_Type type;
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union {
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Example_Struct1 st1;
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Example_Struct2 st2;
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Example_Struct3 st3;
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} u;
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};
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struct _Example_Variant_Type
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{
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const char *type;
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Eina_Bool unknow : 1;
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};
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struct _Example_Variant
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{
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Example_Variant_Type t;
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void *data; /* differently than the union type, we
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* don't need to pre-allocate the memory
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* for the field*/
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};
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struct _Example_Lists
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{
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Eina_List *union_list;
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Eina_List *variant_list;
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};
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static void
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_st1_set(Example_Struct1 *st1,
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double v1,
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int v2,
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const char *v3)
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{
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st1->val1 = v1;
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st1->stuff = v2;
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st1->s1 = v3;
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} /* _st1_set */
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static void
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_st2_set(Example_Struct2 *st2,
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Eina_Bool v1,
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unsigned long long v2)
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{
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st2->b1 = v1;
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st2->v1 = v2;
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} /* _st2_set */
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static void
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_st3_set(Example_Struct3 *st3,
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int v1)
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{
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st3->body = v1;
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} /* _st3_set */
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static const char * /* union type_get() */
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_union_type_get(const void *data,
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Eina_Bool *unknow)
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{
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const Example_Data_Type *u = data;
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int i;
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if (unknow)
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*unknow = EINA_FALSE;
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for (i = 0; eet_mapping[i].name != NULL; ++i)
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if (*u == eet_mapping[i].u)
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return eet_mapping[i].name;
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if (unknow)
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*unknow = EINA_TRUE;
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return NULL;
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} /* _union_type_get */
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static Eina_Bool
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_union_type_set(const char *type,
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void *data,
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Eina_Bool unknow)
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{
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Example_Data_Type *u = data;
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int i;
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if (unknow)
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return EINA_FALSE;
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for (i = 0; eet_mapping[i].name != NULL; ++i)
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if (strcmp(eet_mapping[i].name, type) == 0)
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{
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*u = eet_mapping[i].u;
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return EINA_TRUE;
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}
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return EINA_FALSE;
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} /* _union_type_set */
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static const char *
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_variant_type_get(const void *data,
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Eina_Bool *unknow)
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{
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const Example_Variant_Type *type = data;
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int i;
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if (unknow)
|
||||
*unknow = type->unknow;
|
||||
|
||||
for (i = 0; eet_mapping[i].name != NULL; ++i)
|
||||
if (strcmp(type->type, eet_mapping[i].name) == 0)
|
||||
return eet_mapping[i].name;
|
||||
|
||||
if (unknow)
|
||||
*unknow = EINA_FALSE;
|
||||
|
||||
return type->type;
|
||||
} /* _variant_type_get */
|
||||
|
||||
static Eina_Bool
|
||||
_variant_type_set(const char *type,
|
||||
void *data,
|
||||
Eina_Bool unknow)
|
||||
{
|
||||
Example_Variant_Type *vt = data;
|
||||
|
||||
vt->type = type;
|
||||
vt->unknow = unknow;
|
||||
return EINA_TRUE;
|
||||
} /* _variant_type_set */
|
||||
|
||||
static Eet_Data_Descriptor *
|
||||
_st1_dd(void)
|
||||
{
|
||||
Eet_Data_Descriptor_Class eddc;
|
||||
Eet_Data_Descriptor *res;
|
||||
|
||||
EET_EINA_FILE_DATA_DESCRIPTOR_CLASS_SET(&eddc, Example_Struct1);
|
||||
res = eet_data_descriptor_file_new(&eddc);
|
||||
EET_DATA_DESCRIPTOR_ADD_BASIC(
|
||||
res, Example_Struct1, "val1", val1, EET_T_DOUBLE);
|
||||
EET_DATA_DESCRIPTOR_ADD_BASIC(
|
||||
res, Example_Struct1, "stuff", stuff, EET_T_INT);
|
||||
EET_DATA_DESCRIPTOR_ADD_BASIC(
|
||||
res, Example_Struct1, "s1", s1, EET_T_STRING);
|
||||
|
||||
return res;
|
||||
} /* _st1_dd */
|
||||
|
||||
static Eet_Data_Descriptor *
|
||||
_st2_dd(void)
|
||||
{
|
||||
Eet_Data_Descriptor_Class eddc;
|
||||
Eet_Data_Descriptor *res;
|
||||
|
||||
EET_EINA_FILE_DATA_DESCRIPTOR_CLASS_SET(&eddc, Example_Struct2);
|
||||
res = eet_data_descriptor_file_new(&eddc);
|
||||
EET_DATA_DESCRIPTOR_ADD_BASIC(
|
||||
res, Example_Struct2, "b1", b1, EET_T_UCHAR);
|
||||
EET_DATA_DESCRIPTOR_ADD_BASIC(
|
||||
res, Example_Struct2, "v1", v1, EET_T_ULONG_LONG);
|
||||
|
||||
return res;
|
||||
} /* _st2_dd */
|
||||
|
||||
static Eet_Data_Descriptor *
|
||||
_st3_dd(void)
|
||||
{
|
||||
Eet_Data_Descriptor_Class eddc;
|
||||
Eet_Data_Descriptor *res;
|
||||
|
||||
EET_EINA_FILE_DATA_DESCRIPTOR_CLASS_SET(&eddc, Example_Struct3);
|
||||
res = eet_data_descriptor_file_new(&eddc);
|
||||
EET_DATA_DESCRIPTOR_ADD_BASIC(
|
||||
res, Example_Struct3, "body", body, EET_T_INT);
|
||||
|
||||
return res;
|
||||
} /* _st3_dd */
|
||||
|
||||
/* string that represents the entry in the eet file. you might like to
|
||||
* have different profiles or so in the same file, this is possible
|
||||
* with different strings
|
||||
*/
|
||||
static const char CACHE_FILE_ENTRY[] = "cache";
|
||||
|
||||
/* keep the descriptor static global, so it can be shared by different
|
||||
* functions (load/save) of this and only this file.
|
||||
*/
|
||||
static Eet_Data_Descriptor *_lists_descriptor;
|
||||
static Eet_Data_Descriptor *_struct_1_descriptor;
|
||||
static Eet_Data_Descriptor *_struct_2_descriptor;
|
||||
static Eet_Data_Descriptor *_struct_3_descriptor;
|
||||
static Eet_Data_Descriptor *_union_descriptor;
|
||||
static Eet_Data_Descriptor *_variant_descriptor;
|
||||
static Eet_Data_Descriptor *_union_unified_descriptor;
|
||||
static Eet_Data_Descriptor *_variant_unified_descriptor;
|
||||
|
||||
/* keep file handle alive, so mmap()ed strings are all alive as
|
||||
* well */
|
||||
static Eet_File *_cache_file = NULL;
|
||||
static Eet_Dictionary *_cache_dict = NULL;
|
||||
|
||||
static void /* declaring types */
|
||||
_data_descriptors_init(void)
|
||||
{
|
||||
Eet_Data_Descriptor_Class eddc;
|
||||
|
||||
EET_EINA_FILE_DATA_DESCRIPTOR_CLASS_SET(&eddc, Example_Lists);
|
||||
_lists_descriptor = eet_data_descriptor_file_new(&eddc);
|
||||
|
||||
_struct_1_descriptor = _st1_dd();
|
||||
_struct_2_descriptor = _st2_dd();
|
||||
_struct_3_descriptor = _st3_dd();
|
||||
|
||||
/* for union */
|
||||
EET_EINA_FILE_DATA_DESCRIPTOR_CLASS_SET(&eddc, Example_Union);
|
||||
_union_descriptor = eet_data_descriptor_file_new(&eddc);
|
||||
|
||||
eddc.version = EET_DATA_DESCRIPTOR_CLASS_VERSION;
|
||||
eddc.func.type_get = _union_type_get;
|
||||
eddc.func.type_set = _union_type_set;
|
||||
_union_unified_descriptor = eet_data_descriptor_file_new(&eddc);
|
||||
|
||||
EET_DATA_DESCRIPTOR_ADD_MAPPING(
|
||||
_union_unified_descriptor, "ST1", _struct_1_descriptor);
|
||||
EET_DATA_DESCRIPTOR_ADD_MAPPING(
|
||||
_union_unified_descriptor, "ST2", _struct_2_descriptor);
|
||||
EET_DATA_DESCRIPTOR_ADD_MAPPING(
|
||||
_union_unified_descriptor, "ST3", _struct_3_descriptor);
|
||||
|
||||
EET_DATA_DESCRIPTOR_ADD_UNION(
|
||||
_union_descriptor, Example_Union, "u", u, type,
|
||||
_union_unified_descriptor);
|
||||
|
||||
EET_DATA_DESCRIPTOR_ADD_LIST(
|
||||
_lists_descriptor, Example_Lists, "union_list", union_list,
|
||||
_union_descriptor);
|
||||
|
||||
/* for variant */
|
||||
EET_EINA_FILE_DATA_DESCRIPTOR_CLASS_SET(&eddc, Example_Variant);
|
||||
_variant_descriptor = eet_data_descriptor_file_new(&eddc);
|
||||
|
||||
eddc.version = EET_DATA_DESCRIPTOR_CLASS_VERSION;
|
||||
eddc.func.type_get = _variant_type_get;
|
||||
eddc.func.type_set = _variant_type_set;
|
||||
_variant_unified_descriptor = eet_data_descriptor_stream_new(&eddc);
|
||||
|
||||
EET_DATA_DESCRIPTOR_ADD_MAPPING(
|
||||
_variant_unified_descriptor, "ST1", _struct_1_descriptor);
|
||||
EET_DATA_DESCRIPTOR_ADD_MAPPING(
|
||||
_variant_unified_descriptor, "ST2", _struct_2_descriptor);
|
||||
EET_DATA_DESCRIPTOR_ADD_MAPPING(
|
||||
_variant_unified_descriptor, "ST3", _struct_3_descriptor);
|
||||
|
||||
EET_DATA_DESCRIPTOR_ADD_VARIANT(
|
||||
_variant_descriptor, Example_Variant, "data", data, t,
|
||||
_variant_unified_descriptor);
|
||||
|
||||
EET_DATA_DESCRIPTOR_ADD_LIST(
|
||||
_lists_descriptor, Example_Lists, "variant_list", variant_list,
|
||||
_variant_descriptor);
|
||||
} /* _data_descriptors_init */
|
||||
|
||||
static void
|
||||
_data_descriptors_shutdown(void)
|
||||
{
|
||||
eet_data_descriptor_free(_lists_descriptor);
|
||||
eet_data_descriptor_free(_struct_1_descriptor);
|
||||
eet_data_descriptor_free(_struct_2_descriptor);
|
||||
eet_data_descriptor_free(_struct_3_descriptor);
|
||||
eet_data_descriptor_free(_union_descriptor);
|
||||
eet_data_descriptor_free(_variant_descriptor);
|
||||
eet_data_descriptor_free(_union_unified_descriptor);
|
||||
eet_data_descriptor_free(_variant_unified_descriptor);
|
||||
} /* _data_descriptors_shutdown */
|
||||
|
||||
/* need to check if the pointer came from mmap()ed area in
|
||||
* eet_dictionary or it was allocated with eina_stringshare_add()
|
||||
*/
|
||||
static void
|
||||
_string_free(const char *str)
|
||||
{
|
||||
if (!str)
|
||||
return;
|
||||
|
||||
if ((_cache_dict) && (eet_dictionary_string_check(_cache_dict, str)))
|
||||
return;
|
||||
|
||||
eina_stringshare_del(str);
|
||||
} /* _string_free */
|
||||
|
||||
static Example_Union *
|
||||
_union_1_new(const char *v1,
|
||||
const char *v2,
|
||||
const char *v3)
|
||||
{
|
||||
Example_Union *un = calloc(1, sizeof(Example_Union));
|
||||
if (!un)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not allocate an Example_Union struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
un->type = EET_STRUCT1;
|
||||
_st1_set(&(un->u.st1), atof(v1), atoi(v2), eina_stringshare_add(v3));
|
||||
|
||||
return un;
|
||||
}
|
||||
|
||||
static Example_Union *
|
||||
_union_2_new(const char *v1,
|
||||
const char *v2)
|
||||
{
|
||||
Example_Union *un = calloc(1, sizeof(Example_Union));
|
||||
if (!un)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not allocate an Example_Union struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
un->type = EET_STRUCT2;
|
||||
_st2_set(&(un->u.st2), atoi(v1), atoi(v2));
|
||||
|
||||
return un;
|
||||
}
|
||||
|
||||
static Example_Union *
|
||||
_union_3_new(const char *v1)
|
||||
{
|
||||
Example_Union *un = calloc(1, sizeof(Example_Union));
|
||||
if (!un)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not allocate an Example_Union struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
un->type = EET_STRUCT3;
|
||||
_st3_set(&(un->u.st3), atoi(v1));
|
||||
|
||||
return un;
|
||||
}
|
||||
|
||||
static Example_Variant *
|
||||
_variant_1_new(const char *v1,
|
||||
const char *v2,
|
||||
const char *v3)
|
||||
{
|
||||
Example_Struct1 *st1;
|
||||
Example_Variant *va = calloc(1, sizeof(Example_Variant));
|
||||
if (!va)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not allocate an Example_Variant struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
va = calloc(1, sizeof (Example_Variant));
|
||||
va->t.type = eet_mapping[0].name;
|
||||
st1 = calloc(1, sizeof (Example_Struct1));
|
||||
_st1_set(st1, atof(v1), atoi(v2), eina_stringshare_add(v3));
|
||||
va->data = st1;
|
||||
|
||||
return va;
|
||||
}
|
||||
|
||||
static Example_Variant *
|
||||
_variant_2_new(const char *v1,
|
||||
const char *v2)
|
||||
{
|
||||
printf("varinant 2 new\n");
|
||||
|
||||
Example_Struct2 *st2;
|
||||
Example_Variant *va = calloc(1, sizeof(Example_Variant));
|
||||
if (!va)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not allocate an Example_Variant struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
va = calloc(1, sizeof (Example_Variant));
|
||||
|
||||
va->t.type = eet_mapping[1].name;
|
||||
|
||||
printf("type gets %s\n", va->t.type);
|
||||
|
||||
st2 = calloc(1, sizeof (Example_Struct2));
|
||||
_st2_set(st2, atoi(v1), atoi(v2));
|
||||
va->data = st2;
|
||||
|
||||
return va;
|
||||
}
|
||||
|
||||
static Example_Variant *
|
||||
_variant_3_new(const char *v1)
|
||||
{
|
||||
Example_Struct3 *st3;
|
||||
Example_Variant *va = calloc(1, sizeof(Example_Variant));
|
||||
if (!va)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not allocate an Example_Variant struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
va = calloc(1, sizeof (Example_Variant));
|
||||
va->t.type = eet_mapping[2].name;
|
||||
st3 = calloc(1, sizeof (Example_Struct3));
|
||||
_st3_set(st3, atoi(v1));
|
||||
va->data = st3;
|
||||
|
||||
return va;
|
||||
}
|
||||
|
||||
static Example_Lists *
|
||||
_data_new(void)
|
||||
{
|
||||
Example_Lists *example_lists = calloc(1, sizeof(Example_Lists));
|
||||
if (!example_lists)
|
||||
{
|
||||
fprintf(stderr, "ERROR: could not allocate a Example_Lists struct.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return example_lists;
|
||||
} /* _data_new */
|
||||
|
||||
static void
|
||||
_union_free(Example_Union *un)
|
||||
{
|
||||
if (un->type == EET_STRUCT1)
|
||||
{
|
||||
Example_Struct1 *st1 = &(un->u.st1);
|
||||
_string_free(st1->s1);
|
||||
}
|
||||
|
||||
free(un);
|
||||
}
|
||||
|
||||
static void
|
||||
_variant_free(Example_Variant *va)
|
||||
{
|
||||
if (!strcmp(va->t.type, eet_mapping[0].name))
|
||||
{
|
||||
Example_Struct1 *st1 = va->data;
|
||||
_string_free(st1->s1);
|
||||
}
|
||||
|
||||
free(va->data);
|
||||
free(va);
|
||||
}
|
||||
|
||||
static void
|
||||
_data_free(Example_Lists *cache)
|
||||
{
|
||||
Example_Union *un;
|
||||
Example_Variant *va;
|
||||
|
||||
EINA_LIST_FREE(cache->union_list, un)
|
||||
_union_free(un);
|
||||
|
||||
EINA_LIST_FREE(cache->variant_list, va)
|
||||
_variant_free(va);
|
||||
|
||||
free(cache);
|
||||
} /* _data_free */
|
||||
|
||||
static Example_Lists *
|
||||
_data_load(const char *filename)
|
||||
{
|
||||
Example_Lists *data;
|
||||
Eet_File *ef = eet_open(filename, EET_FILE_MODE_READ);
|
||||
if (!ef)
|
||||
{
|
||||
fprintf(stderr, "ERROR: could not open '%s' for read\n", filename);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
data = eet_data_read(ef, _lists_descriptor, CACHE_FILE_ENTRY);
|
||||
if (!data)
|
||||
{
|
||||
eet_close(ef);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (_cache_file)
|
||||
eet_close(_cache_file);
|
||||
|
||||
_cache_file = ef;
|
||||
_cache_dict = eet_dictionary_get(ef);
|
||||
|
||||
return data;
|
||||
} /* _data_load */
|
||||
|
||||
static Eina_Bool
|
||||
_data_save(const Example_Lists *cache,
|
||||
const char *filename)
|
||||
{
|
||||
char tmp[PATH_MAX];
|
||||
Eet_File *ef;
|
||||
Eina_Bool ret;
|
||||
unsigned int i, len;
|
||||
struct stat st;
|
||||
|
||||
len = eina_strlcpy(tmp, filename, sizeof(tmp));
|
||||
if (len + 12 >= (int)sizeof(tmp))
|
||||
{
|
||||
fprintf(stderr, "ERROR: file name is too big: %s\n", filename);
|
||||
return EINA_FALSE;
|
||||
}
|
||||
|
||||
i = 0;
|
||||
do
|
||||
{
|
||||
snprintf(tmp + len, 12, ".%u", i);
|
||||
i++;
|
||||
}
|
||||
while (stat(tmp, &st) == 0);
|
||||
|
||||
ef = eet_open(tmp, EET_FILE_MODE_WRITE);
|
||||
if (!ef)
|
||||
{
|
||||
fprintf(stderr, "ERROR: could not open '%s' for write\n", tmp);
|
||||
return EINA_FALSE;
|
||||
}
|
||||
|
||||
ret = eet_data_write
|
||||
(ef, _lists_descriptor, CACHE_FILE_ENTRY, cache, EINA_TRUE);
|
||||
|
||||
eet_close(ef);
|
||||
|
||||
if (ret)
|
||||
{
|
||||
unlink(filename);
|
||||
rename(tmp, filename);
|
||||
}
|
||||
|
||||
return ret;
|
||||
} /* _data_save */
|
||||
|
||||
static void
|
||||
_print_union(const Example_Union *un)
|
||||
{
|
||||
printf("\t | type: %s'\n", eet_mapping[un->type - 1].name);
|
||||
|
||||
switch (un->type)
|
||||
{
|
||||
case EET_STRUCT1:
|
||||
printf("\t\t val1: %f\n", un->u.st1.val1);
|
||||
printf("\t\t stuff: %d\n", un->u.st1.stuff);
|
||||
printf("\t\t s1: %s\n", un->u.st1.s1);
|
||||
break;
|
||||
|
||||
case EET_STRUCT2:
|
||||
printf("\t\t val1: %i\n", un->u.st2.b1);
|
||||
printf("\t\t stuff: %lli\n", un->u.st2.v1);
|
||||
break;
|
||||
|
||||
case EET_STRUCT3:
|
||||
printf("\t\t val1: %i\n", un->u.st3.body);
|
||||
break;
|
||||
|
||||
default:
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
_print_variant(const Example_Variant *va)
|
||||
{
|
||||
printf("\t | type: %s'\n", va->t.type);
|
||||
|
||||
switch (va->t.type[2])
|
||||
{
|
||||
case '1':
|
||||
{
|
||||
Example_Struct1 *st1 = va->data;
|
||||
|
||||
printf("\t\t val1: %f\n", st1->val1);
|
||||
printf("\t\t stuff: %d\n", st1->stuff);
|
||||
printf("\t\t s1: %s\n", st1->s1);
|
||||
}
|
||||
break;
|
||||
|
||||
case '2':
|
||||
{
|
||||
Example_Struct2 *st2 = va->data;
|
||||
|
||||
printf("\t\t val1: %i\n", st2->b1);
|
||||
printf("\t\t stuff: %lli\n", st2->v1);
|
||||
}
|
||||
break;
|
||||
|
||||
case '3':
|
||||
{
|
||||
Example_Struct3 *st3 = va->data;
|
||||
|
||||
printf("\t\t val1: %i\n", st3->body);
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc,
|
||||
char *argv[])
|
||||
{
|
||||
Example_Lists *data_lists;
|
||||
int ret = 0;
|
||||
|
||||
if (argc < 3)
|
||||
{
|
||||
fprintf(stderr,
|
||||
"Usage:\n\t%s <input> <output> [action action-params]\n\n"
|
||||
"where actions and their parameters are:\n"
|
||||
"\tunion <type> [fields]\n"
|
||||
"\tvariant <type> [fields]\n"
|
||||
"\n",
|
||||
argv[0]);
|
||||
return -1;
|
||||
}
|
||||
|
||||
eina_init();
|
||||
eet_init();
|
||||
_data_descriptors_init();
|
||||
|
||||
data_lists = _data_load(argv[1]);
|
||||
if (!data_lists)
|
||||
{
|
||||
printf("Creating new data lists.\n");
|
||||
data_lists = _data_new();
|
||||
if (!data_lists)
|
||||
{
|
||||
ret = -2;
|
||||
goto end;
|
||||
}
|
||||
}
|
||||
|
||||
if (argc > 3)
|
||||
{
|
||||
if (strcmp(argv[3], "union") == 0)
|
||||
{
|
||||
if (argc > 4)
|
||||
{
|
||||
int type = atoi(argv[4]);
|
||||
Example_Union *un;
|
||||
|
||||
if (type < EET_STRUCT1 || type > EET_STRUCT3)
|
||||
{
|
||||
fprintf(stderr,
|
||||
"ERROR: invalid type parameter (%s).\n",
|
||||
argv[4]);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
switch (type)
|
||||
{
|
||||
case 1:
|
||||
if (argc != 8)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: wrong number of parameters"
|
||||
" (%d).\n", argc);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
un = _union_1_new(
|
||||
argv[5], argv[6], argv[7]);
|
||||
if (!un)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not create the "
|
||||
"requested union.\n");
|
||||
goto cont;
|
||||
}
|
||||
data_lists->union_list =
|
||||
eina_list_append(data_lists->union_list, un);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
if (argc != 7)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: wrong number of parameters"
|
||||
" (%d).\n", argc);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
un = _union_2_new(argv[5], argv[6]);
|
||||
if (!un)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not create the "
|
||||
"requested union.\n");
|
||||
goto cont;
|
||||
}
|
||||
data_lists->union_list =
|
||||
eina_list_append(data_lists->union_list, un);
|
||||
break;
|
||||
|
||||
case 3:
|
||||
if (argc != 6)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: wrong number of parameters"
|
||||
" (%d).\n", argc);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
un = _union_3_new(argv[5]);
|
||||
if (!un)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not create the "
|
||||
"requested union.\n");
|
||||
goto cont;
|
||||
}
|
||||
data_lists->union_list =
|
||||
eina_list_append(data_lists->union_list, un);
|
||||
break;
|
||||
|
||||
default:
|
||||
fprintf(
|
||||
stderr, "ERROR: bad type of of struct passed\n");
|
||||
goto cont;
|
||||
}
|
||||
}
|
||||
else
|
||||
fprintf(stderr,
|
||||
"ERROR: wrong number of parameters (%d).\n",
|
||||
argc);
|
||||
}
|
||||
else if (strcmp(argv[3], "variant") == 0)
|
||||
{
|
||||
if (argc > 4)
|
||||
{
|
||||
int type = atoi(argv[4]);
|
||||
Example_Variant *va;
|
||||
|
||||
if (type < EET_STRUCT1 || type > EET_STRUCT3)
|
||||
{
|
||||
fprintf(stderr,
|
||||
"ERROR: invalid type parameter (%s).\n",
|
||||
argv[4]);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
switch (type)
|
||||
{
|
||||
case 1:
|
||||
if (argc != 8)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: wrong number of parameters"
|
||||
" (%d).\n", argc);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
va = _variant_1_new(
|
||||
argv[5], argv[6], argv[7]);
|
||||
if (!va)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not create the "
|
||||
"requested variant.\n");
|
||||
goto cont;
|
||||
}
|
||||
data_lists->variant_list =
|
||||
eina_list_append(data_lists->variant_list, va);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
if (argc != 7)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: wrong number of parameters"
|
||||
" (%d).\n", argc);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
va = _variant_2_new(argv[5], argv[6]);
|
||||
if (!va)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not create the "
|
||||
"requested variant.\n");
|
||||
goto cont;
|
||||
}
|
||||
data_lists->variant_list =
|
||||
eina_list_append(data_lists->variant_list, va);
|
||||
break;
|
||||
|
||||
case 3:
|
||||
if (argc != 6)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: wrong number of parameters"
|
||||
" (%d).\n", argc);
|
||||
goto cont;
|
||||
}
|
||||
|
||||
va = _variant_3_new(argv[5]);
|
||||
if (!va)
|
||||
{
|
||||
fprintf(
|
||||
stderr, "ERROR: could not create the "
|
||||
"requested variant.\n");
|
||||
goto cont;
|
||||
}
|
||||
data_lists->variant_list =
|
||||
eina_list_append(data_lists->variant_list, va);
|
||||
break;
|
||||
|
||||
default:
|
||||
fprintf(
|
||||
stderr, "ERROR: bad type of of struct passed\n");
|
||||
goto cont;
|
||||
}
|
||||
}
|
||||
else
|
||||
fprintf(stderr,
|
||||
"ERROR: wrong number of parameters (%d).\n",
|
||||
argc);
|
||||
}
|
||||
else
|
||||
fprintf(stderr, "ERROR: unknown action '%s'\n", argv[3]);
|
||||
}
|
||||
|
||||
cont:
|
||||
printf("Cached data:\n");
|
||||
|
||||
printf("\tstats: unions=%u, variants=%u\n",
|
||||
eina_list_count(data_lists->union_list),
|
||||
eina_list_count(data_lists->variant_list));
|
||||
|
||||
if (eina_list_count(data_lists->union_list))
|
||||
{
|
||||
const Eina_List *l;
|
||||
const Example_Union *un;
|
||||
printf("\t * union list:\n");
|
||||
|
||||
EINA_LIST_FOREACH(data_lists->union_list, l, un)
|
||||
{
|
||||
_print_union(un);
|
||||
}
|
||||
}
|
||||
|
||||
if (eina_list_count(data_lists->variant_list))
|
||||
{
|
||||
const Eina_List *l;
|
||||
const Example_Variant *un;
|
||||
printf("\t * variant list:\n");
|
||||
|
||||
EINA_LIST_FOREACH(data_lists->variant_list, l, un)
|
||||
{
|
||||
_print_variant(un);
|
||||
}
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
|
||||
if (!_data_save(data_lists, argv[2]))
|
||||
ret = -3;
|
||||
|
||||
_data_free(data_lists);
|
||||
|
||||
end:
|
||||
if (_cache_file)
|
||||
eet_close(_cache_file);
|
||||
_data_descriptors_shutdown();
|
||||
eet_shutdown();
|
||||
eina_shutdown();
|
||||
|
||||
return ret;
|
||||
} /* main */
|
||||
|
|
@ -2002,6 +2002,8 @@ eet_identity_certificate_print(const unsigned char *certificate,
|
|||
* The following is a list of more advanced and detailed examples.
|
||||
* @li @ref eet_data_nested_example
|
||||
* @li @ref eet_data_file_descriptor
|
||||
* @li @ref Example_Eet_Data_File_Descriptor_02
|
||||
* @li @ref Example_Eet_Data_Cipher_Decipher
|
||||
*/
|
||||
|
||||
/**
|
||||
|
@ -2112,14 +2114,14 @@ eet_identity_certificate_print(const unsigned char *certificate,
|
|||
* the following example. It's been slightly modified from the original
|
||||
* source to show more of the varied ways in which Eet can handle our data.
|
||||
*
|
||||
* @ref eet-data-file_descriptor.c "This example" shows a cache of user
|
||||
* @ref eet-data-file_descriptor_01.c "This example" shows a cache of user
|
||||
* accounts and messages received, and it's a bit more interactive than
|
||||
* previous examples.
|
||||
*
|
||||
* Let's begin by looking at the structures we'll be using. First we have
|
||||
* one to define the messages the user receives and one for the one he posts.
|
||||
* Straight forward and nothing new here.
|
||||
* @dontinclude eet-data-file_descriptor.c
|
||||
* @dontinclude eet-data-file_descriptor_01.c
|
||||
* @skip typedef
|
||||
* @until My_Post
|
||||
*
|
||||
|
@ -2244,7 +2246,7 @@ eet_identity_certificate_print(const unsigned char *certificate,
|
|||
* @until }
|
||||
*
|
||||
* Skipping all the utility functions used by our program (remember you can
|
||||
* look at the full example @ref eet-data-file_descriptor.c "here") we get to
|
||||
* look at the full example @ref eet-data-file_descriptor_01.c "here") we get to
|
||||
* our cache loading code. Nothing out of the ordinary at first, just the
|
||||
* same old open file, read data using our main descriptor to decode it
|
||||
* into something we can use and check version of loaded data and if it doesn't
|
||||
|
|
Loading…
Reference in New Issue