fileinfo.c

#include "fileinfo.h"

uint64_t readintobuf(char* filename, char** out) {
	FILE* file = fopen(filename, "r");
	if(file == NULL) {
		fprintf(stderr,"Error: unable to open file '%s'\n",filename);
		exit(2);
	}
	fseek(file, 0, SEEK_END);
	uint64_t length = ftell(file);
	fseek(file, 0, SEEK_SET);
	*out = (char*)malloc(length*sizeof(char));
	fread(*out, length, 1, file);
	fclose(file);
	return length;
}

filedata* loadfile(char* filename) {
	filedata* ret = (filedata*)calloc(1,sizeof(filedata));
	ret->length = readintobuf(filename, &(ret->contents));
	printf("[File] Name: %s | Size: %lX bytes\n",filename,ret->length);
	parse(ret);
	return ret;
}

void parse(filedata* fd) {
	if(strncmp(fd->contents,"<!--",4) == 0) {
		fprintf(stderr,"Parsing as dmx...\n");
		fd->filetype = UNK_DMX;
	} else if( *((uint32_t*)fd->contents) == 0x55aa1234) {
		fprintf(stderr,"Parsing as vpk...\n");
		fd->filetype = VPK;
	} else if( *((uint32_t*)fd->contents) == 0xFADEBEAD) {
		fprintf(stderr,"Parsing as gnv...\n");
		fd->filetype = GNV;
	} else if(strncmp(fd->contents,"VBSP",4) == 0) {
		fprintf(stderr,"Parsing as bsp. Currently not handled and out of scope.\n");
		fd->filetype = BSP;
	} else if(strncmp(fd->contents,"vcs2",4) == 0) {
		fprintf(stderr,"Parsing as vcs...\n");
		parse_vcs(fd);
	} else if(strncmp(fd->contents,"VBKV",4) == 0) {
		fprintf(stderr,"Parsing as vbkv. Currently not handled...and it's _super_ uncommon.\n");
		fd->filetype = VBKV;
	} else if(strncmp(fd->contents,"// file",7) == 0) {
		fprintf(stderr,"Parsing as cloth...\n");
		fd->filetype = KV_CLOTH;
	} else if( *((uint32_t*)fd->contents) == fd->length) {
		fprintf(stderr,"Parsing as SVF...\n");
		parse_svf(fd);
	} else if( *((uint16_t*)(fd->contents+4)) == 0x0C) {
		fprintf(stderr,"File length wrong, but speculatively parsing as SVF...\n");
		parse_svf(fd);
	} else {
		fprintf(stderr,"Unknown file type.\n");
		fd->filetype = UNKNOWN;
	}
}

void fd_free(filedata* fd) {
	if(fd == NULL) {
		fprintf(stderr, "Error: Tried to fd_free null pointer!\n");
		return;
	}
}