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core: Add Efl_Io_File example into efl-core reference 

Refactor the copier code into a separate method for clarity.
This commit is contained in:
Andy Williams 2017-11-28 09:21:09 +00:00
parent c41c0cc319
commit bc275959dd
1 changed files with 86 additions and 12 deletions
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98
reference/c/core/src/core_io.c
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@ -2,6 +2,7 @@
#define EFL_BETA_API_SUPPORT 1
#include <stdio.h>
#include <fcntl.h>
#include <Eina.h>
#include <Efl_Core.h>
@ -9,12 +10,76 @@
/*
* Efl.IO examples.
*
* This IO example simply copies data from a source (stdin) to a
* destination (stdout) using an Efl.Io.Copier.
* This IO example shows the use of various IO APIs. First we use Efl.Io.File
* to read and write a standard file. Then we set up a copier to copy data from
* a source (stdin) to a destination (stdout) using an Efl.Io.Copier.
*/
Eo *_copier = NULL;
static void
_io_write(const char *filename)
{
Eina_Slice content = EINA_SLICE_STR("1. Some dummy content\n2. \n3. With more...\n");
Efl_Io_File *file;
file = efl_add(EFL_IO_FILE_CLASS, NULL,
efl_file_set(efl_added, filename, NULL), // mandatory
efl_io_file_flags_set(efl_added, O_WRONLY | O_CREAT), // write and create - default is read
efl_io_file_mode_set(efl_added, 0644), // neccessary if we use O_CREAT
efl_io_closer_close_on_destructor_set(efl_added, EINA_TRUE)); // recommended
if (!file)
return;
printf("Loaded file %s for read on fd %d\n", filename, efl_io_reader_fd_get(file));
if (efl_io_writer_write(file, &content, NULL) != EINA_ERROR_NO_ERROR)
fprintf(stderr, "Failed to write test file\n");
else
printf("Wrote content to file\n");
efl_del(file);
}
static void
_io_read(const char *filename)
{
EINA_RW_SLICE_DECLARE(content, 1024);
Efl_Io_File *file;
file = efl_add(EFL_IO_FILE_CLASS, NULL,
efl_file_set(efl_added, filename, NULL), // mandatory
efl_io_closer_close_on_destructor_set(efl_added, EINA_TRUE)); // recommended
if (!file)
return;
printf("Loaded file %s for write on fd %d\n", filename, efl_io_reader_fd_get(file));
if (efl_io_reader_read(file, &content) != EINA_ERROR_NO_ERROR)
fprintf(stderr, "Failed to read test file\n");
else
{
char *string = eina_rw_slice_strdup(content);
printf("Read content from file: %s\n", string);
free(string);
}
efl_del(file);
}
static void
_io_test()
{
const char *filename = "/tmp/efl_core_io_test.tmp";
_io_write(filename);
_io_read(filename);
eina_file_unlink(filename);
}
static void
_copier_done(void *data EINA_UNUSED, const Efl_Event *event)
{
@ -38,17 +103,10 @@ EFL_CALLBACKS_ARRAY_DEFINE(copier_cbs,
{ EFL_IO_COPIER_EVENT_DONE, _copier_done },
{ EFL_IO_COPIER_EVENT_ERROR, _copier_error });
EAPI_MAIN void
efl_main(void *data EINA_UNUSED, const Efl_Event *ev)
static void
_copier_test(Efl_Loop *loop)
{
Eo *input, *output, *loop;
/*
* Some objects such as the Efl.Io.Copier require a main loop,
* thus their parent must be a loop provider.
* We use the application's main loop itself.
*/
loop = ev->object;
Eo *input, *output;
// set up our objects to copy, use stdin and stdout
input = efl_add(EFL_IO_STDIN_CLASS, loop);
@ -69,5 +127,21 @@ efl_main(void *data EINA_UNUSED, const Efl_Event *ev)
printf("Type something here and press enter, it will be copied to stdout...\n");
printf(" (press Ctrl-D to exit)\n");
}
EAPI_MAIN void
efl_main(void *data EINA_UNUSED, const Efl_Event *ev)
{
Efl_Loop *loop;
_io_test();
/*
* Some objects such as the Efl.Io.Copier require a main loop,
* thus their parent must be a loop provider.
* We use the application's main loop itself.
*/
loop = ev->object;
_copier_test(loop);
}
EFL_MAIN()