624 lines
21 KiB
C
624 lines
21 KiB
C
#ifndef EINA_STRBUF_H
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#define EINA_STRBUF_H
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#include <stddef.h>
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#include <stdarg.h>
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#include "eina_types.h"
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/**
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* @page tutorial_strbuf Eina_Strbuf example
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* @dontinclude eina_strbuf_01.c
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*
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* First thing always is including Eina:
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* @skipline #include
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* @until #include
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*
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* Next we initialize eina and create a string buffer to play with:
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* @until strbuf_new
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*
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* Here you can see two different ways of creating a buffer with the same
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* contents. We could create them in simpler ways, but this gives us an
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* opportunity to demonstrate several functions in action:
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* @until strbuf_reset
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* @until strbuf_reset
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*
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* Next we use the printf family of functions to create a formated string,
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* add, remove and replace some content:
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* @until strbuf_string_get
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* @until strbuf_string_get
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* @until strbuf_string_get
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*
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* Once done we free our string buffer, shut down Eina and end the application:
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* @until }
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*
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* @example eina_strbuf_01.c
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*/
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/**
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* @addtogroup Eina_String_Buffer_Group String Buffer
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*
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* @brief These functions provide string buffers management.
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*
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* The String Buffer data type is designed to be a mutable string,
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* allowing to append, prepend or insert a string to a buffer.
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*
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* For more information see @ref tutorial_strbuf "this example".
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*/
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/**
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* @addtogroup Eina_Data_Types_Group Data Types
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*
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* @{
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*/
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/**
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* @defgroup Eina_String_Buffer_Group String Buffer
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*
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* @{
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*/
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/**
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* @typedef Eina_Strbuf
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* Type for a string buffer.
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*/
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typedef struct _Eina_Strbuf Eina_Strbuf;
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/**
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* @brief Create a new string buffer.
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*
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* @return Newly allocated string buffer instance.
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*
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* This function creates a new string buffer. On error, @c NULL is
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* returned and Eina error is set to #EINA_ERROR_OUT_OF_MEMORY. To
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* free the resources, use eina_strbuf_free().
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*
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* @see eina_strbuf_free()
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* @see eina_strbuf_append()
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* @see eina_strbuf_string_get()
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*/
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EAPI Eina_Strbuf *eina_strbuf_new(void) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
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/**
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* @brief Create a new string buffer using the passed string. The passed
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* string is used directly as the buffer, it's somehow the opposite function of
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* @ref eina_strbuf_string_steal . The passed string must be malloced.
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*
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* @param str the string to manage
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* @return Newly allocated string buffer instance.
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*
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* This function creates a new string buffer. On error, @c NULL is
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* returned and Eina error is set to #EINA_ERROR_OUT_OF_MEMORY. To
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* free the resources, use eina_strbuf_free().
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*
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* @see eina_strbuf_free()
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* @see eina_strbuf_append()
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* @see eina_strbuf_string_get()
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* @since 1.1.0
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*/
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EAPI Eina_Strbuf *eina_strbuf_manage_new(char *str) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
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/**
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* @brief Create a new string buffer using the passed string. The passed
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* string is used directly as the buffer, it's somehow the opposite function of
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* @ref eina_strbuf_string_steal . The passed string must be malloced.
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*
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* @param str the string to manage
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* @param length the length of the string.
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* @return Newly allocated string buffer instance.
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*
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* This function creates a new string buffer. On error, @c NULL is
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* returned and Eina error is set to #EINA_ERROR_OUT_OF_MEMORY. To
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* free the resources, use eina_strbuf_free().
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*
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* @see eina_strbuf_manage_new()
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* @since 1.2.0
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*/
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EAPI Eina_Strbuf *eina_strbuf_manage_new_length(char *str, size_t length) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
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/**
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* @brief Free a string buffer.
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*
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* @param buf The string buffer to free.
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*
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* This function frees the memory of @p buf. @p buf must have been
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* created by eina_strbuf_new().
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*/
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EAPI void eina_strbuf_free(Eina_Strbuf *buf) EINA_ARG_NONNULL(1);
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/**
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* @brief Reset a string buffer.
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*
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* @param buf The string buffer to reset.
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*
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* This function reset @p buf: the buffer len is set to 0, and the
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* string is set to '\\0'. No memory is free'd.
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*/
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EAPI void eina_strbuf_reset(Eina_Strbuf *buf) EINA_ARG_NONNULL(1);
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/**
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* @brief Append a string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to append to.
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* @param str The string to append.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function appends @p str to @p buf. It computes the length of
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* @p str, so is slightly slower than eina_strbuf_append_length(). If
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* the length is known beforehand, consider using that variant. If
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* @p buf can't append it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*
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* @see eina_strbuf_append()
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* @see eina_strbuf_append_length()
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*/
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EAPI Eina_Bool eina_strbuf_append(Eina_Strbuf *buf, const char *str) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Append an escaped string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to append to.
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* @param str The string to append.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function escapes and then appends the string @p str to @p buf. If @p str
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* can not be appended, #EINA_FALSE is returned, otherwise, #EINA_TRUE is
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* returned.
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*/
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EAPI Eina_Bool eina_strbuf_append_escaped(Eina_Strbuf *buf, const char *str) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Append a string to a buffer, reallocating as necessary,
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* limited by the given length.
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*
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* @param buf The string buffer to append to.
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* @param str The string to append.
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* @param maxlen The maximum number of characters to append.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function appends at most @p maxlen characters of @p str to
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* @p buf. It can't append more than the length of @p str. It
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* computes the length of @p str, so it is slightly slower than
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* eina_strbuf_append_length(). If the length is known beforehand,
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* consider using that variant (@p maxlen should then be checked so
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* that it is greater than the size of @p str). If @p str can not be
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* appended, #EINA_FALSE is returned, otherwise, #EINA_TRUE is
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* returned.
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*
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* @see eina_strbuf_append()
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* @see eina_strbuf_append_length()
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*/
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EAPI Eina_Bool eina_strbuf_append_n(Eina_Strbuf *buf, const char *str, size_t maxlen) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Append a string of exact length to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to append to.
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* @param str The string to append.
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* @param length The exact length to use.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function appends @p str to @p buf. @p str must be of size at
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* most @p length. It is slightly faster than eina_strbuf_append() as
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* it does not compute the size of @p str. It is useful when dealing
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* with strings of known size, such as eina_stringshare. If @p buf
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* can't append it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*
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* @see eina_stringshare_length()
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* @see eina_strbuf_append()
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* @see eina_strbuf_append_n()
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*/
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EAPI Eina_Bool eina_strbuf_append_length(Eina_Strbuf *buf, const char *str, size_t length) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Append a character to a string buffer, reallocating as
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* necessary.
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*
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* @param buf The string buffer to append to.
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* @param c The char to append.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function inserts @p c to @p buf. If it can not insert it, #EINA_FALSE
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* is returned, otherwise #EINA_TRUE is returned.
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*/
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EAPI Eina_Bool eina_strbuf_append_char(Eina_Strbuf *buf, char c) EINA_ARG_NONNULL(1);
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/**
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* @brief Append a string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to append to.
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* @param fmt The string to append.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function appends the string defined by the format @p fmt to @p buf. @p
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* fmt must be of a valid format for printf family of functions. If it can't
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* insert it, #EINA_FALSE is returned, otherwise #EINA_TRUE is returned.
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*
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* @see eina_strbuf_append()
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*/
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EAPI Eina_Bool eina_strbuf_append_printf(Eina_Strbuf *buf, const char *fmt, ...) EINA_ARG_NONNULL(1, 2) EINA_PRINTF(2, 3);
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/**
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* @brief Append a string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to append to.
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* @param fmt The string to append.
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* @param args The variable arguments.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* @see eina_strbuf_append_printf()
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*/
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EAPI Eina_Bool eina_strbuf_append_vprintf(Eina_Strbuf *buf, const char *fmt, va_list args) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Insert a string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to insert.
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* @param str The string to insert.
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* @param pos The position to insert the string.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function inserts @p str to @p buf at position @p pos. It
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* computes the length of @p str, so is slightly slower than
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* eina_strbuf_insert_length(). If the length is known beforehand,
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* consider using that variant. If @p buf can't insert it, #EINA_FALSE
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* is returned, otherwise #EINA_TRUE is returned.
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*/
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EAPI Eina_Bool eina_strbuf_insert(Eina_Strbuf *buf, const char *str, size_t pos) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Insert an escaped string to a buffer, reallocating as
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* necessary.
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*
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* @param buf The string buffer to insert to.
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* @param str The string to insert.
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* @param pos The position to insert the string.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function escapes and inserts the string @p str to @p buf at
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* position @p pos. If @p buf can't insert @p str, #EINA_FALSE is
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* returned, otherwise #EINA_TRUE is returned.
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*/
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EAPI Eina_Bool eina_strbuf_insert_escaped(Eina_Strbuf *buf, const char *str, size_t pos) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Insert a string to a buffer, reallocating as necessary. Limited by maxlen.
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*
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* @param buf The string buffer to insert to.
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* @param str The string to insert.
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* @param maxlen The maximum number of chars to insert.
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* @param pos The position to insert the string.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function inserts @p str to @p buf at position @p pos, with at
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* most @p maxlen bytes. The number of inserted characters can not be
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* greater than the length of @p str. It computes the length of
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* @p str, so is slightly slower than eina_strbuf_insert_length(). If the
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* length is known beforehand, consider using that variant (@p maxlen
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* should then be checked so that it is greater than the size of
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* @p str). If @p str can not be inserted, #EINA_FALSE is returned,
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* otherwise, #EINA_TRUE is returned.
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*/
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EAPI Eina_Bool eina_strbuf_insert_n(Eina_Strbuf *buf, const char *str, size_t maxlen, size_t pos) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Insert a string of exact length to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to insert to.
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* @param str The string to insert.
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* @param length The exact length to use.
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* @param pos The position to insert the string.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function inserts @p str to @p buf. @p str must be of size at
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* most @p length. It is slightly faster than eina_strbuf_insert() as
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* it does not compute the size of @p str. It is useful when dealing
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* with strings of known size, such as eina_strngshare. If @p buf
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* can't insert it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*
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* @see eina_stringshare_length()
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* @see eina_strbuf_insert()
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* @see eina_strbuf_insert_n()
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*/
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EAPI Eina_Bool eina_strbuf_insert_length(Eina_Strbuf *buf, const char *str, size_t length, size_t pos) EINA_ARG_NONNULL(1, 2);
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/**
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* @brief Insert a character to a string buffer, reallocating as
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* necessary.
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*
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* @param buf The string buffer to insert to.
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* @param c The char to insert.
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* @param pos The position to insert the char.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function inserts @p c to @p buf at position @p pos. If @p buf
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* can't append it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*/
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EAPI Eina_Bool eina_strbuf_insert_char(Eina_Strbuf *buf, char c, size_t pos) EINA_ARG_NONNULL(1);
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/**
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* @brief Insert a string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to insert.
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* @param fmt The string to insert.
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* @param pos The position to insert the string.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function insert a string as described by the format @p fmt to @p buf at
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* the position @p pos. @p fmt must be of a valid format for printf family of
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* functions. If it can't insert it, #EINA_FALSE is returned,
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* otherwise #EINA_TRUE is returned.
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*/
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EAPI Eina_Bool eina_strbuf_insert_printf(Eina_Strbuf *buf, const char *fmt, size_t pos, ...) EINA_ARG_NONNULL(1, 2) EINA_PRINTF(2, 4);
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/**
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* @brief Insert a string to a buffer, reallocating as necessary.
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*
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* @param buf The string buffer to insert.
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* @param fmt The string to insert.
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* @param pos The position to insert the string.
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* @param args The variable arguments.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* @see eina_strbuf_insert_printf
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*/
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EAPI Eina_Bool eina_strbuf_insert_vprintf(Eina_Strbuf *buf, const char *fmt, size_t pos, va_list args) EINA_ARG_NONNULL(1, 2);
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/**
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* @def eina_strbuf_prepend(buf, str)
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* @brief Prepend the given string to the given buffer
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*
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* @param buf The string buffer to prepend to.
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* @param str The string to prepend.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This macro is calling eina_strbuf_insert() at position 0. If @p buf
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* can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*/
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#define eina_strbuf_prepend(buf, str) eina_strbuf_insert(buf, str, 0)
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/**
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* @def eina_strbuf_prepend_escaped(buf, str)
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* @brief Prepend the given escaped string to the given buffer
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*
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* @param buf The string buffer to prepend to.
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* @param str The string to prepend.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This macro is calling eina_strbuf_insert_escaped() at position 0. If
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* @p buf can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*/
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#define eina_strbuf_prepend_escaped(buf, str) eina_strbuf_insert_escaped(buf, str, 0)
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/**
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* @def eina_strbuf_prepend_n(buf, str)
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* @brief Prepend the given escaped string to the given buffer
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*
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* @param buf The string buffer to prepend to.
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* @param str The string to prepend.
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* @param maxlen The maximum number of chars to prepend.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This macro is calling eina_strbuf_insert_n() at position 0. If
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* @p buf can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*/
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#define eina_strbuf_prepend_n(buf, str, maxlen) eina_strbuf_insert_n(buf, str, maxlen, 0)
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/**
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* @def eina_strbuf_prepend_length(buf, str)
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* @brief Prepend the given escaped string to the given buffer
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*
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* @param buf The string buffer to prepend to.
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* @param str The string to prepend.
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* @param length The exact length to use.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This macro is calling eina_strbuf_insert_length() at position 0. If
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* @p buf can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
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* returned.
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*/
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#define eina_strbuf_prepend_length(buf, str, length) eina_strbuf_insert_length(buf, str, length, 0)
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/**
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* @def eina_strbuf_prepend_char(buf, str)
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* @brief Prepend the given character to the given buffer
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*
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* @param buf The string buffer to prepend to.
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* @param c The character to prepend.
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This macro is calling eina_strbuf_insert_char() at position 0. If
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* @p buf can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE
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* is returned.
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*/
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#define eina_strbuf_prepend_char(buf, c) eina_strbuf_insert_char(buf, c, 0)
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/**
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* @def eina_strbuf_prepend_printf(buf, fmt, ...)
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|
* @brief Prepend the given string to the given buffer
|
|
*
|
|
* @param buf The string buffer to prepend to.
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|
* @param fmt The string to prepend.
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|
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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|
*
|
|
* This macro is calling eina_strbuf_insert_printf() at position 0. If @p buf
|
|
* can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
|
|
* returned.
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|
*/
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|
#define eina_strbuf_prepend_printf(buf, fmt, ...) eina_strbuf_insert_printf(buf, fmt, 0, ## __VA_ARGS__)
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/**
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|
* @def eina_strbuf_prepend_vprintf(buf, fmt, args)
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|
* @brief Prepend the given string to the given buffer
|
|
*
|
|
* @param buf The string buffer to prepend to.
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|
* @param fmt The string to prepend.
|
|
* @param args The variable arguments.
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|
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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|
*
|
|
* This macro is calling eina_strbuf_insert_vprintf() at position 0.If @p buf
|
|
* can't prepend it, #EINA_FALSE is returned, otherwise #EINA_TRUE is
|
|
* returned.
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|
*/
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|
#define eina_strbuf_prepend_vprintf(buf, fmt, args) eina_strbuf_insert_vprintf(buf, fmt, 0, args)
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/**
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|
* @brief Remove a slice of the given string buffer.
|
|
*
|
|
* @param buf The string buffer to remove a slice.
|
|
* @param start The initial (inclusive) slice position to start
|
|
* removing, in bytes.
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|
* @param end The final (non-inclusive) slice position to finish
|
|
* removing, in bytes.
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|
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
|
|
*
|
|
* This function removes a slice of @p buf, starting at @p start
|
|
* (inclusive) and ending at @p end (non-inclusive). Both values are
|
|
* in bytes. It returns #EINA_FALSE on failure, #EINA_TRUE otherwise.
|
|
*/
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|
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|
EAPI Eina_Bool eina_strbuf_remove(Eina_Strbuf *buf, size_t start, size_t end) EINA_ARG_NONNULL(1);
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|
|
/**
|
|
* @brief Retrieve a pointer to the contents of a string buffer
|
|
*
|
|
* @param buf The string buffer.
|
|
* @return The current string in the string buffer.
|
|
*
|
|
* This function returns the string contained in @p buf. The returned
|
|
* value must not be modified and will no longer be valid if @p buf is
|
|
* modified. In other words, any eina_strbuf_append() or similar will
|
|
* make that pointer invalid. The pointer returned by this function <b>must
|
|
* not</b> be freed.
|
|
*
|
|
* @see eina_strbuf_string_steal()
|
|
*/
|
|
EAPI const char *eina_strbuf_string_get(const Eina_Strbuf *buf) EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT;
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|
|
|
/**
|
|
* @brief Steal the contents of a string buffer.
|
|
*
|
|
* @param buf The string buffer to steal.
|
|
* @return The current string in the string buffer.
|
|
*
|
|
* This function returns the string contained in @p buf. @p buf is
|
|
* then initialized and does not own the returned string anymore. The
|
|
* caller must release the memory of the returned string by calling
|
|
* free().
|
|
*
|
|
* @see eina_strbuf_string_get()
|
|
*/
|
|
EAPI char *eina_strbuf_string_steal(Eina_Strbuf *buf) EINA_MALLOC EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1);
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|
|
|
/**
|
|
* @brief Free the contents of a string buffer but not the buffer.
|
|
*
|
|
* @param buf The string buffer to free the string of.
|
|
*
|
|
* This function frees the string contained in @p buf without freeing
|
|
* @p buf.
|
|
*/
|
|
EAPI void eina_strbuf_string_free(Eina_Strbuf *buf) EINA_ARG_NONNULL(1);
|
|
|
|
/**
|
|
* @brief Retrieve the length of the string buffer content.
|
|
*
|
|
* @param buf The string buffer.
|
|
* @return The current length of the string, in bytes.
|
|
*
|
|
* This function returns the length of @p buf.
|
|
*/
|
|
EAPI size_t eina_strbuf_length_get(const Eina_Strbuf *buf) EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT;
|
|
|
|
|
|
/**
|
|
* @brief Replace the n-th string with an other string.
|
|
*
|
|
* @param buf The string buffer to work with.
|
|
* @param str The string to replace.
|
|
* @param with The replaceing string.
|
|
* @param n The number of the fitting string.
|
|
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
|
|
*
|
|
* This function replaces the n-th occurrence of @p str in @p buf with
|
|
* @p with. It returns #EINA_FALSE on failure, #EINA_TRUE otherwise.
|
|
*/
|
|
EAPI Eina_Bool eina_strbuf_replace(Eina_Strbuf *buf, const char *str, const char *with, unsigned int n) EINA_ARG_NONNULL(1, 2, 3);
|
|
|
|
/**
|
|
* @def eina_strbuf_replace_first(buf, str, with)
|
|
* @brief Prepend the given character to the given buffer
|
|
*
|
|
* @param buf The string buffer to work with.
|
|
* @param str The string to replace.
|
|
* @param with The replaceing string.
|
|
* @return #EINA_TRUE on success, #EINA_FALSE on failure.
|
|
*
|
|
* This macro is calling eina_strbuf_replace() with the n-th occurrence
|
|
* equal to @c 1. If @p buf can't replace it, #EINA_FALSE is returned,
|
|
* otherwise #EINA_TRUE is returned.
|
|
*/
|
|
#define eina_strbuf_replace_first(buf, str, with) eina_strbuf_replace(buf, str, with, 1)
|
|
|
|
|
|
/**
|
|
* @brief Replace all strings with an other string.
|
|
|
|
* @param buf the string buffer to work with.
|
|
* @param str The string to replace.
|
|
* @param with The replaceing string.
|
|
* @return How often the string was replaced.
|
|
*
|
|
* This function replaces all the occurrences of @p str in @p buf with
|
|
* the string @p with. This function returns the number of times @p str
|
|
* has been replaced. On failure, it returns @c 0.
|
|
*/
|
|
EAPI int eina_strbuf_replace_all(Eina_Strbuf *buf, const char *str, const char *with) EINA_ARG_NONNULL(1, 2, 3);
|
|
|
|
/**
|
|
* @brief Trim the string buffer
|
|
|
|
* @param buf the string buffer to work with.
|
|
*
|
|
* This function skips whitespaces in the beginning and the end of the buffer.
|
|
*/
|
|
EAPI void eina_strbuf_trim(Eina_Strbuf *buf) EINA_ARG_NONNULL(1);
|
|
|
|
/**
|
|
* @brief Left trim the string buffer
|
|
|
|
* @param buf the string buffer to work with.
|
|
*
|
|
* This function skips whitespaces in the beginning of the buffer.
|
|
*/
|
|
EAPI void eina_strbuf_ltrim(Eina_Strbuf *buf) EINA_ARG_NONNULL(1);
|
|
|
|
/**
|
|
* @brief Right trim the string buffer
|
|
|
|
* @param buf the string buffer to work with.
|
|
*
|
|
* This function skips whitespaces in the end of the buffer.
|
|
*/
|
|
EAPI void eina_strbuf_rtrim(Eina_Strbuf *buf) EINA_ARG_NONNULL(1);
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* EINA_STRBUF_H */
|