mirror of
https://github.com/git/git
synced 2024-08-25 02:35:46 +00:00
![Rene Scharfe](/assets/img/avatar_default.png)
As Fredrik points out the current interface of has_extension() is potentially confusing. Its parameters include both a nul-terminated string and a length-limited string. This patch drops the length argument, requiring two nul-terminated strings; all callsites are updated. I checked that all of them indeed provide nul-terminated strings. Filenames need to be nul-terminated anyway if they are to be passed to open() etc. The performance penalty of the additional strlen() is negligible compared to the system calls which inevitably surround has_extension() calls. Additionally, change has_extension() to use size_t inside instead of int, as that is the exact type strlen() returns and memcmp() expects. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <junkio@cox.net>
179 lines
4 KiB
C
179 lines
4 KiB
C
#ifndef GIT_COMPAT_UTIL_H
|
|
#define GIT_COMPAT_UTIL_H
|
|
|
|
#ifndef FLEX_ARRAY
|
|
#if defined(__GNUC__) && (__GNUC__ < 3)
|
|
#define FLEX_ARRAY 0
|
|
#else
|
|
#define FLEX_ARRAY /* empty */
|
|
#endif
|
|
#endif
|
|
|
|
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <sys/param.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/types.h>
|
|
#include <dirent.h>
|
|
|
|
#ifdef __GNUC__
|
|
#define NORETURN __attribute__((__noreturn__))
|
|
#else
|
|
#define NORETURN
|
|
#ifndef __attribute__
|
|
#define __attribute__(x)
|
|
#endif
|
|
#endif
|
|
|
|
/* General helper functions */
|
|
extern void usage(const char *err) NORETURN;
|
|
extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
|
|
extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
|
|
|
|
extern void set_usage_routine(void (*routine)(const char *err) NORETURN);
|
|
extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
|
|
extern void set_error_routine(void (*routine)(const char *err, va_list params));
|
|
|
|
#ifdef NO_MMAP
|
|
|
|
#ifndef PROT_READ
|
|
#define PROT_READ 1
|
|
#define PROT_WRITE 2
|
|
#define MAP_PRIVATE 1
|
|
#define MAP_FAILED ((void*)-1)
|
|
#endif
|
|
|
|
#define mmap gitfakemmap
|
|
#define munmap gitfakemunmap
|
|
extern void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset);
|
|
extern int gitfakemunmap(void *start, size_t length);
|
|
|
|
#else /* NO_MMAP */
|
|
|
|
#include <sys/mman.h>
|
|
|
|
#endif /* NO_MMAP */
|
|
|
|
#ifdef NO_SETENV
|
|
#define setenv gitsetenv
|
|
extern int gitsetenv(const char *, const char *, int);
|
|
#endif
|
|
|
|
#ifdef NO_UNSETENV
|
|
#define unsetenv gitunsetenv
|
|
extern void gitunsetenv(const char *);
|
|
#endif
|
|
|
|
#ifdef NO_STRCASESTR
|
|
#define strcasestr gitstrcasestr
|
|
extern char *gitstrcasestr(const char *haystack, const char *needle);
|
|
#endif
|
|
|
|
#ifdef NO_STRLCPY
|
|
#define strlcpy gitstrlcpy
|
|
extern size_t gitstrlcpy(char *, const char *, size_t);
|
|
#endif
|
|
|
|
static inline void *xmalloc(size_t size)
|
|
{
|
|
void *ret = malloc(size);
|
|
if (!ret && !size)
|
|
ret = malloc(1);
|
|
if (!ret)
|
|
die("Out of memory, malloc failed");
|
|
#ifdef XMALLOC_POISON
|
|
memset(ret, 0xA5, size);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
static inline void *xrealloc(void *ptr, size_t size)
|
|
{
|
|
void *ret = realloc(ptr, size);
|
|
if (!ret && !size)
|
|
ret = realloc(ptr, 1);
|
|
if (!ret)
|
|
die("Out of memory, realloc failed");
|
|
return ret;
|
|
}
|
|
|
|
static inline void *xcalloc(size_t nmemb, size_t size)
|
|
{
|
|
void *ret = calloc(nmemb, size);
|
|
if (!ret && (!nmemb || !size))
|
|
ret = calloc(1, 1);
|
|
if (!ret)
|
|
die("Out of memory, calloc failed");
|
|
return ret;
|
|
}
|
|
|
|
static inline ssize_t xread(int fd, void *buf, size_t len)
|
|
{
|
|
ssize_t nr;
|
|
while (1) {
|
|
nr = read(fd, buf, len);
|
|
if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
|
|
continue;
|
|
return nr;
|
|
}
|
|
}
|
|
|
|
static inline ssize_t xwrite(int fd, const void *buf, size_t len)
|
|
{
|
|
ssize_t nr;
|
|
while (1) {
|
|
nr = write(fd, buf, len);
|
|
if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
|
|
continue;
|
|
return nr;
|
|
}
|
|
}
|
|
|
|
static inline int has_extension(const char *filename, const char *ext)
|
|
{
|
|
size_t len = strlen(filename);
|
|
size_t extlen = strlen(ext);
|
|
return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
|
|
}
|
|
|
|
/* Sane ctype - no locale, and works with signed chars */
|
|
#undef isspace
|
|
#undef isdigit
|
|
#undef isalpha
|
|
#undef isalnum
|
|
#undef tolower
|
|
#undef toupper
|
|
extern unsigned char sane_ctype[256];
|
|
#define GIT_SPACE 0x01
|
|
#define GIT_DIGIT 0x02
|
|
#define GIT_ALPHA 0x04
|
|
#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
|
|
#define isspace(x) sane_istest(x,GIT_SPACE)
|
|
#define isdigit(x) sane_istest(x,GIT_DIGIT)
|
|
#define isalpha(x) sane_istest(x,GIT_ALPHA)
|
|
#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
|
|
#define tolower(x) sane_case((unsigned char)(x), 0x20)
|
|
#define toupper(x) sane_case((unsigned char)(x), 0)
|
|
|
|
static inline int sane_case(int x, int high)
|
|
{
|
|
if (sane_istest(x, GIT_ALPHA))
|
|
x = (x & ~0x20) | high;
|
|
return x;
|
|
}
|
|
|
|
#ifndef MAXPATHLEN
|
|
#define MAXPATHLEN 256
|
|
#endif
|
|
#endif
|