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add Qfopen: basicly wrap a QFile around an existing FILE. gzip is NOT supported

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This commit is contained in:
Bill Currie 2006-05-24 11:17:18 +00:00 committed by Jeff Teunissen
parent 19c5946be8
commit 88543d6e86
2 changed files with 53 additions and 15 deletions
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3
include/QF/quakeio.h
View file

@ -30,6 +30,8 @@
#ifndef __quakeio_h
#define __quakeio_h
#include <stdio.h>
/** \addtogroup utils */
//@{
@ -44,6 +46,7 @@ int Qremove(const char *path);
int Qfilesize (QFile *file);
QFile *Qopen(const char *path, const char *mode);
QFile *Qdopen(int fd, const char *mode);
QFile *Qfopen (FILE *file, const char *mode);
QFile *Qsubopen (const char *path, int offs, int len, int zip);
void Qclose(QFile *file);
int Qread(QFile *file, void *buf, int count);

65
libs/util/quakeio.c
View file

@ -69,6 +69,9 @@ static __attribute__ ((used)) const char rcsid[] =
# endif
#endif
#define QF_ZIP 1
#define QF_READ 2
struct QFile_s {
FILE *file;
#ifdef HAVE_ZLIB
@ -109,7 +112,7 @@ check_file (int fd, int offs, int len, int *zip)
len = lseek (fd, 0, SEEK_END);
lseek (fd, 0, SEEK_SET);
}
if (*zip) {
if (zip && *zip) {
int r;
lseek (fd, offs, SEEK_SET);
@ -129,32 +132,46 @@ check_file (int fd, int offs, int len, int *zip)
return len;
}
QFile *
Qopen (const char *path, const char *mode)
static int
file_mode (const char *mode, char *out)
{
QFile *file;
char *m, *p;
int reading = 0;
int zip = 0;
int size = -1;
int flags = 0;
char *p;
m = alloca (strlen (mode) + 1);
for (p = m; *mode && p - m < ((int) sizeof (m) - 1); mode++) {
for (p = out; *mode; mode++) {
if (*mode == 'z') {
zip = 1;
flags |= QF_ZIP;
continue;
}
if (*mode == 'r') {
reading = 1;
if (*mode == 'r' || ((*mode == 'w' || *mode == 'a') && *mode == '+')) {
flags |= QF_READ;
}
#ifndef HAVE_ZLIB
if (strchr ("0123456789fh", *mode)) {
continue;
}
#endif
*p++ = *mode;
if (p)
*p++ = *mode;
}
*p = 0;
if (p)
*p = 0;
return flags;
}
QFile *
Qopen (const char *path, const char *mode)
{
QFile *file;
char *m;
int flags, reading, zip;
int size = -1;
m = alloca (strlen (mode) + 1);
flags = file_mode (mode, m);
zip = flags & QF_ZIP;
reading = flags & QF_READ;
if (reading) {
int fd = open (path, O_RDONLY);
@ -232,6 +249,24 @@ Qdopen (int fd, const char *mode)
return file;
}
QFile *
Qfopen (FILE *file, const char *mode)
{
QFile *qfile;
int flags = file_mode (mode, 0);
if (!file)
return 0;
qfile = calloc (sizeof (*qfile), 1);
if (!qfile)
return 0;
qfile->file = file;
if (flags & QF_READ)
qfile->size = check_file (fileno (file), -1, -1, 0);
qfile->c = -1;
return qfile;
}
QFile *
Qsubopen (const char *path, int offs, int len, int zip)
{