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/*
extract the dependencies string from a GObject Introspection 1.0 typelib file
and print it on stdout
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#define G_IR_MAGIC "GOBJ\nMETADATA\r\n\032"
int main(int argc, char ** argv)
{
FILE * typelib;
char * magic;
uint32_t deps_offset;
char * deps;
if (argc < 2)
{
fprintf(stderr, "too few arguments\n");
exit(1);
}
typelib = fopen(argv[1], "r");
if (typelib == NULL)
{
fprintf(stderr, "failed to open %s\n", argv[1]);
exit(1);
}
magic = malloc(16);
deps = malloc(8192);
if ((magic == NULL) || (deps == NULL))
{
fprintf(stderr, "failed to allocate memory\n");
exit(1);
}
if (fread(magic, 16, 1, typelib) < 1)
{
fprintf(stderr, "failed to read magic from typelib\n");
exit(1);
}
if (strcmp(magic, G_IR_MAGIC))
{
fprintf(stderr, "magic mismatch, not a typelib?\n");
exit(1);
}
fseek(typelib, 36, SEEK_SET);
if (fread(&deps_offset, 4, 1, typelib) < 1)
{
fprintf(stderr, "failed to read deps offset from typelib\n");
exit(1);
}
fseek(typelib, deps_offset, SEEK_SET);
if (fscanf(typelib, "%8191s", deps) < 1)
{
fprintf(stderr, "failed to read deps from typelib\n");
exit(1);
}
free(deps);
free(magic);
fclose(typelib);
printf("%s\n", deps);
return 0;
}
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