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This attempts to clean up the way various compatibility functions are defined and used. - A new header file, git-compat-util.h, is introduced. This looks at various NO_XXX and does necessary function name replacements, equivalent of -Dstrcasestr=gitstrcasestr in the Makefile. - Those function name replacements are removed from the Makefile. - Common features such as usage(), die(), xmalloc() are moved from cache.h to git-compat-util.h; cache.h includes git-compat-util.h itself. Signed-off-by: Junio C Hamano <[email protected]>
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Junio C Hamano
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Dec 5, 2005
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| #ifndef GIT_COMPAT_UTIL_H | ||
| #define GIT_COMPAT_UTIL_H | ||
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| #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> | ||
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| #ifdef __GNUC__ | ||
| #define NORETURN __attribute__((__noreturn__)) | ||
| #else | ||
| #define NORETURN | ||
| #ifndef __attribute__ | ||
| #define __attribute__(x) | ||
| #endif | ||
| #endif | ||
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| /* 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))); | ||
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| #ifdef NO_MMAP | ||
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| #ifndef PROT_READ | ||
| #define PROT_READ 1 | ||
| #define PROT_WRITE 2 | ||
| #define MAP_PRIVATE 1 | ||
| #define MAP_FAILED ((void*)-1) | ||
| #endif | ||
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| #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); | ||
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| #else /* NO_MMAP */ | ||
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| #include <sys/mman.h> | ||
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| #endif /* NO_MMAP */ | ||
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| #ifdef NO_SETENV | ||
| #define setenv gitsetenv | ||
| extern int gitsetenv(const char *, const char *, int); | ||
| #endif | ||
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| #ifdef NO_STRCASESTR | ||
| #define strcasestr gitstrcasestr | ||
| extern char *gitstrcasestr(const char *haystack, const char *needle); | ||
| #endif | ||
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| static inline void *xmalloc(size_t size) | ||
| { | ||
| void *ret = malloc(size); | ||
| if (!ret) | ||
| die("Out of memory, malloc failed"); | ||
| return ret; | ||
| } | ||
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| static inline void *xrealloc(void *ptr, size_t size) | ||
| { | ||
| void *ret = realloc(ptr, size); | ||
| if (!ret) | ||
| die("Out of memory, realloc failed"); | ||
| return ret; | ||
| } | ||
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| static inline void *xcalloc(size_t nmemb, size_t size) | ||
| { | ||
| void *ret = calloc(nmemb, size); | ||
| if (!ret) | ||
| die("Out of memory, calloc failed"); | ||
| return ret; | ||
| } | ||
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| /* 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) | ||
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| static inline int sane_case(int x, int high) | ||
| { | ||
| if (sane_istest(x, GIT_ALPHA)) | ||
| x = (x & ~0x20) | high; | ||
| return x; | ||
| } | ||
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| #endif |
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