/*
 * Copyright (c) 1991-1994  Sony Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL SONY CORPORATION BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of Sony Corporation
 * shall not be used in advertising or otherwise to promote the sale, use
 * or other dealings in this Software without prior written authorization
 * from Sony Corporation.
 *
 */


#include "sj4mkdic.h"

typedef struct filelist {
	FILE*		 fp;
	char*		 fname;
	struct filelist* next;
} FileList;

static FileList* flist = NULL;

static char*
get_fname(FILE* fp) {
	FileList* p;

	for(p = flist; p; p = p->next)
		if(p->fp == fp) return p->fname;
	return "some file";
}

FILE* Fopen(char* filename, char* type) {
	FILE*	  fp;
	char*	  p;
	FileList* fl;
	size_t	  len;

	if(!(fp = fopen(filename, type))) {
		fprintf(stderr, "Can't open %s mode \"%s\"\n", filename, type);
		exit(1);
	}

	fl	  = (FileList*)Malloc(sizeof(*fl));
	len	  = strlen(filename) + 1;
	fl->fname = Malloc(len);
	sj4_strlcpy(fl->fname, filename, len);
	fl->fp	 = fp;
	fl->next = flist;
	flist	 = fl;

	return fp;
}

void Fclose(FILE* fp) {
	FileList *p, *q;

	if(fclose(fp) == EOF) {
		fprintf(stderr, "Close error in %s\n", get_fname(fp));
		exit(1);
	}

	for(p = flist, q = NULL; p; q = p, p = p->next) {
		if(p->fp == fp) {
			if(q)
				q->next = p->next;
			else
				flist = p->next;
			free(p->fname);
			free(p);
			break;
		}
	}
}

int Fseek(FILE* fp, long ofs, int ptr) {
	if(fseek(fp, ofs, ptr) == 0) return 0;

	fprintf(stderr, "Seek error in %s\n", get_fname(fp));
	exit(1);
}

long Ftell(FILE* fp) {
	return ftell(fp);
}

long Fsize(char* filename) {
	struct stat buf;

	if(stat(filename, &buf) == 0) return (long)buf.st_size;

	fprintf(stderr, "Stat error in %s\n", filename);
	exit(1);
}

size_t
Fread(char* p, int s, int n, FILE* fp) {
	if(fread(p, s, n, fp) == n) return n;

	printf("!\n");

	fprintf(stderr, "Read error in %s\n", get_fname(fp));
	exit(1);
}

size_t
Fwrite(char* p, int s, int n, FILE* fp) {
	if(fwrite(p, s, n, fp) == n) return n;

	fprintf(stderr, "Write error in %s\n", get_fname(fp));
	exit(1);
}

int Fgetc(FILE* fp) {
	return fgetc(fp);
}

int Fflush(FILE* fp) {
	return fflush(fp);
}