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2D_Engine_C
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Fixed some memory errors and leaks in asset builder.

This commit is contained in:
Ulysse Cura 2026-07-22 02:54:03 +02:00
parent c730276f82
commit 1c3c3e8b59
4 changed files with 103 additions and 87 deletions
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38
assets/asset_builder/src/asset_file.c
View File

@ -6,7 +6,7 @@
#include "errors.h"
int parse_png_for_header(const char *input_file_name, asset_header_def_t *asset_header_def);
int parse_png_for_content(const char *input_file_name, FILE *output_file);
int parse_png_for_content_and_write(const char *input_file_name, FILE *output_file);
int parse_file_for_header(const char *input_file_name, asset_header_def_t *asset_header_def)
{
@ -29,19 +29,16 @@ int parse_file_for_header(const char *input_file_name, asset_header_def_t *asset
int write_header_to_file(asset_file_header_t *asset_file_header, FILE *output_file)
{
size_t ret = fwrite(&asset_file_header->assets_number, sizeof(size_t), 1, output_file);
if(ret != 1)
if(fwrite(&asset_file_header->assets_number, sizeof(size_t), 1, output_file) != 1)
return WRITE_FAILED;
for(size_t i = 0; i < asset_file_header->assets_number; i++)
{
size_t name_length = strlen(asset_file_header->assets_header_def[i].name) + 1;
ret = fwrite(asset_file_header->assets_header_def[i].name, sizeof(unsigned char), name_length, output_file);
if(ret != name_length)
if(fwrite(asset_file_header->assets_header_def[i].name, sizeof(unsigned char), name_length, output_file) != name_length)
return WRITE_FAILED;
ret = fwrite(&asset_file_header->assets_header_def[i].start, sizeof(size_t), 1, output_file);
if(ret != 1)
if(fwrite(&asset_file_header->assets_header_def[i].start, sizeof(size_t), 1, output_file) != 1)
return WRITE_FAILED;
}
@ -61,7 +58,7 @@ int parse_file_for_content_and_write(const char *input_file_name, FILE *output_f
if(!strcmp(file_name_ext, "png"))
{
return parse_png_for_content(input_file_name, output_file);
return parse_png_for_content_and_write(input_file_name, output_file);
}
return EXTENSION_UNSUPPORTED;
@ -73,13 +70,16 @@ int parse_png_for_header(const char *file_name, asset_header_def_t *asset_header
FILE *input_file = fopen(file_name, "rb");
if(!input_file)
{
return OPEN_FAILED;
}
// Check png autenticity.
unsigned char sig[8];
fread(sig, 1, 8, input_file);
if(fread(sig, sizeof(unsigned char), 8, input_file) != 8)
{
fclose(input_file);
return READ_FAILED;
}
if(!png_check_sig(sig, 8))
{
fclose(input_file);
@ -142,19 +142,23 @@ int parse_png_for_header(const char *file_name, asset_header_def_t *asset_header
return NO_ERROR;
}
int parse_png_for_content(const char *input_file_name, FILE *output_file)
int parse_png_for_content_and_write(const char *input_file_name, FILE *output_file)
{
FILE *input_file = fopen(input_file_name, "rb");
if(!input_file)
{
fclose(input_file);
return OPEN_FAILED;
}
// Check png autenticity.
unsigned char sig[8];
fread(sig, 1, 8, input_file);
if(fread(sig, sizeof(unsigned char), 8, input_file) != 8)
{
fclose(input_file);
return READ_FAILED;
}
if(!png_check_sig(sig, 8))
{
fclose(input_file);
@ -187,16 +191,14 @@ int parse_png_for_content(const char *input_file_name, FILE *output_file)
size_t row_length = png_get_rowbytes(png_ptr, info_ptr);
// Write image size.
size_t ret = fwrite(&width, sizeof(size_t), 1, output_file);
if(!ret)
if(fwrite(&width, sizeof(size_t), 1, output_file) != 1)
{
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
fclose(input_file);
return WRITE_FAILED;
}
ret = fwrite(&height, sizeof(size_t), 1, output_file);
if(!ret)
if(fwrite(&height, sizeof(size_t), 1, output_file) != 1)
{
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
fclose(input_file);

39
assets/asset_builder/src/errors.c
View File

@ -6,3 +6,42 @@ void print_error(const char *content)
{
printf("\033[31merror\033[m: %s\n", content);
}
void print_error_description(error_t error)
{
switch(error)
{
case NO_EXTENSION:
print_error("file does not have an extension."); break;
case EXTENSION_UNSUPPORTED:
print_error("extension not yet supported."); break;
case OPEN_FAILED:
print_error("failed to open file."); break;
case READ_FAILED:
print_error("failed to read the input file."); break;
case WRITE_FAILED:
print_error("failed to write to output file."); break;
case BAD_SIGNATURE:
print_error("file not valid."); break;
case MEMORY_ALLOC_FAILED:
print_error("memory allocation failed."); break;
case PNG_BIT_DEPTH_UNSUPPORTED:
print_error("png bit depth not supported."); break;
case PNG_COLOR_TYPE_UNSUPPORTED:
print_error("png color type not supported."); break;
case NO_ERROR:
return;
default:
print_error("unknown error"); break;
}
}

3
assets/asset_builder/src/headers/errors.h
View File

@ -6,6 +6,7 @@ typedef enum error_t {
NO_EXTENSION,
EXTENSION_UNSUPPORTED,
OPEN_FAILED,
READ_FAILED,
WRITE_FAILED,
BAD_SIGNATURE,
MEMORY_ALLOC_FAILED,
@ -17,4 +18,6 @@ typedef enum error_t {
void print_error(const char *content);
void print_error_description(error_t error);
#endif // ERROR_H

110
assets/asset_builder/src/main.c
View File

@ -6,11 +6,16 @@
int main(int argc, char *argv[])
{
int exit_status = EXIT_SUCCESS;
FILE *output_asset_file = NULL;
// Verify arguments minimum number.
if(argc < 3)
{
puts("\033[33musage\033[m: asset_builder output_file input_file [input_file_2 ...]");
return EXIT_FAILURE;
exit_status = EXIT_FAILURE;
goto end;
}
// Header size and content.
@ -18,6 +23,13 @@ int main(int argc, char *argv[])
asset_file_header.assets_number = argc - 2;
asset_file_header.header_size = sizeof(size_t) + sizeof(size_t) * asset_file_header.assets_number;
asset_file_header.assets_header_def = malloc(asset_file_header.assets_number * sizeof(asset_header_def_t));
if(!asset_file_header.assets_header_def)
{
print_error("memory allocation failed.");
exit_status = EXIT_FAILURE;
goto end;
}
// Set assets name.
for(size_t i = 0; i < asset_file_header.assets_number; i++)
@ -30,22 +42,23 @@ int main(int argc, char *argv[])
const char *file_name_dot = strrchr(file_name, '.');
const char *file_name_ext = file_name_dot ? file_name_dot + 1 : file_name;
size_t asset_name_length = strlen(file_base_name) - strlen(file_name_ext) - 1;
size_t asset_name_length = strlen(file_base_name) - strlen(file_name_ext);
asset_file_header.assets_header_def[i].name = malloc(asset_name_length);
strncpy(asset_file_header.assets_header_def[i].name, file_base_name, asset_name_length);
asset_file_header.assets_header_def[i].name[asset_name_length - 1] = '\0';
strncpy(asset_file_header.assets_header_def[i].name, file_base_name, asset_name_length - 1);
// Update header size.
asset_file_header.header_size += asset_name_length + 1;
asset_file_header.header_size += asset_name_length;
}
// Parse input files to create header structure and fill output file.
FILE *output_asset_file = fopen(argv[1], "wb");
output_asset_file = fopen(argv[1], "wb");
if(!output_asset_file)
{
print_error("could not create output file.");
return EXIT_FAILURE;
exit_status = EXIT_FAILURE;
goto end;
}
for(size_t i = 0; i < asset_file_header.assets_number; i++)
@ -54,35 +67,10 @@ int main(int argc, char *argv[])
if(ret)
{
switch(ret)
{
case NO_EXTENSION:
print_error("file does not have an extension."); break;
print_error_description(ret);
case EXTENSION_UNSUPPORTED:
print_error("extension not yet supported."); break;
case OPEN_FAILED:
print_error("failed to open file."); break;
case BAD_SIGNATURE:
print_error("file not valid."); break;
case MEMORY_ALLOC_FAILED:
print_error("memory allocation failed."); break;
case PNG_BIT_DEPTH_UNSUPPORTED:
print_error("png bit depth not supported."); break;
case PNG_COLOR_TYPE_UNSUPPORTED:
print_error("png color type not supported."); break;
default:
print_error("unknown error"); break;
}
fclose(output_asset_file);
return EXIT_FAILURE;
exit_status = EXIT_FAILURE;
goto end;
}
// Calculate absolute position of assets in the file.
@ -94,8 +82,8 @@ int main(int argc, char *argv[])
if(write_header_to_file(&asset_file_header, output_asset_file))
{
print_error("can't write to output file.");
fclose(output_asset_file);
return EXIT_FAILURE;
exit_status = EXIT_FAILURE;
goto end;
}
for(size_t i = 0; i < asset_file_header.assets_number; i++)
@ -104,40 +92,24 @@ int main(int argc, char *argv[])
if(ret)
{
switch(ret)
{
case NO_EXTENSION:
print_error("file does not have an extension."); break;
print_error_description(ret);
case EXTENSION_UNSUPPORTED:
print_error("extension not yet supported."); break;
case OPEN_FAILED:
print_error("failed to open file."); break;
case WRITE_FAILED:
print_error("failed to write to output file."); break;
case BAD_SIGNATURE:
print_error("file not valid."); break;
case MEMORY_ALLOC_FAILED:
print_error("memory allocation failed."); break;
case PNG_BIT_DEPTH_UNSUPPORTED:
print_error("png bit depth not supported."); break;
case PNG_COLOR_TYPE_UNSUPPORTED:
print_error("png color type not supported."); break;
default:
print_error("unknown error"); break;
}
fclose(output_asset_file);
return EXIT_FAILURE;
exit_status = EXIT_FAILURE;
goto end;
}
}
return EXIT_SUCCESS;
end:
if(asset_file_header.assets_header_def)
{
for(size_t i = 0; i < asset_file_header.assets_number; i++)
free(asset_file_header.assets_header_def[i].name);
free(asset_file_header.assets_header_def);
}
if(output_asset_file)
fclose(output_asset_file);
return exit_status;
}