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Attempt detecting BOM before parsing parameters

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This commit is contained in:
Cacodemon345
2025-03-15 00:34:36 +06:00
parent 0686045d2a
commit a340f250f2
2 changed files with 35 additions and 4 deletions
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36
src/qt/qt_glsl_parser.cpp
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@@ -17,6 +17,7 @@ extern "C"
#include <86box/config.h>
#include <86box/qt-glslp-parser.h>
#include <86box/path.h>
#include <86box/plat.h>
extern void startblit();
extern void endblit();
@@ -81,14 +82,38 @@ static int endswith(const char *str, const char *ext) {
return 0;
}
static int
glsl_detect_bom(const char *fn)
{
FILE *fp;
unsigned char bom[4] = { 0, 0, 0, 0 };
fp = plat_fopen(fn, "rb");
if (fp == NULL)
return 0;
(void) !fread(bom, 1, 3, fp);
if (bom[0] == 0xEF && bom[1] == 0xBB && bom[2] == 0xBF) {
fclose(fp);
return 1;
}
fclose(fp);
return 0;
}
static char *load_file(const char *fn) {
FILE *f = fopen(fn, "rb");
int bom = glsl_detect_bom(fn);
FILE *f = plat_fopen(fn, "rb");
if (!f)
return 0;
fseek(f, 0, SEEK_END);
long fsize = ftell(f);
fseek(f, 0, SEEK_SET);
if (bom) {
fsize -= 3;
fseek(f, 3, SEEK_SET);
}
char *data = (char*)malloc(fsize + 1);
fread(data, fsize, 1, f);
@@ -131,12 +156,15 @@ static int get_parameters(glslp_t *glsl) {
int i;
struct parameter p;
for (i = 0; i < glsl->num_shaders; ++i) {
char line[1024];
struct shader *shader = &glsl->shaders[i];
FILE *f = fopen(shader->shader_fn, "rb");
int bom = glsl_detect_bom(shader->shader_fn);
FILE *f = plat_fopen(shader->shader_fn, "rb");
if (!f)
return 0;
char line[1024];
if (bom) {
fseek(f, 3, SEEK_SET);
}
while (fgets(line, sizeof(line) - 1, f) && glsl->num_parameters < MAX_PARAMETERS) {
int num = sscanf(line, "#pragma parameter %63s \"%63[^\"]\" %f %f %f %f", p.id, p.description,
&p.default_value, &p.min, &p.max, &p.step);