avoid using skip_prefix as a boolean
[git/git.git] / git-compat-util.h
CommitLineData
4050c0df
JH
1#ifndef GIT_COMPAT_UTIL_H
2#define GIT_COMPAT_UTIL_H
3
b97e9116
MW
4#define _FILE_OFFSET_BITS 64
5
8f1d2e6f 6#ifndef FLEX_ARRAY
8e973991
JH
7/*
8 * See if our compiler is known to support flexible array members.
9 */
203ee91f 10#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580))
8e973991
JH
11# define FLEX_ARRAY /* empty */
12#elif defined(__GNUC__)
13# if (__GNUC__ >= 3)
14# define FLEX_ARRAY /* empty */
15# else
16# define FLEX_ARRAY 0 /* older GNU extension */
17# endif
18#endif
19
20/*
21 * Otherwise, default to safer but a bit wasteful traditional style
22 */
23#ifndef FLEX_ARRAY
24# define FLEX_ARRAY 1
8f1d2e6f
JH
25#endif
26#endif
27
b4f2a6ac 28#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
f630cfda 29#define bitsizeof(x) (CHAR_BIT * sizeof(x))
b4f2a6ac 30
c03c8315
EFL
31#define maximum_signed_value_of_type(a) \
32 (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
33
1368f650
JN
34#define maximum_unsigned_value_of_type(a) \
35 (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a)))
36
c03c8315
EFL
37/*
38 * Signed integer overflow is undefined in C, so here's a helper macro
39 * to detect if the sum of two integers will overflow.
40 *
41 * Requires: a >= 0, typeof(a) equals typeof(b)
42 */
43#define signed_add_overflows(a, b) \
44 ((b) > maximum_signed_value_of_type(a) - (a))
45
1368f650
JN
46#define unsigned_add_overflows(a, b) \
47 ((b) > maximum_unsigned_value_of_type(a) - (a))
48
8723f216
NP
49#ifdef __GNUC__
50#define TYPEOF(x) (__typeof__(x))
51#else
52#define TYPEOF(x)
53#endif
54
f630cfda 55#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
db7244bd 56#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
8723f216 57
98cb6f30
PH
58#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
59
cf606e3d
AW
60/* Approximation of the length of the decimal representation of this type. */
61#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
62
4cb18a49
BC
63#if defined(__sun__)
64 /*
65 * On Solaris, when _XOPEN_EXTENDED is set, its header file
66 * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE
67 * setting to say we are XPG5 or XPG6. Also on Solaris,
68 * XPG6 programs must be compiled with a c99 compiler, while
69 * non XPG6 programs must be compiled with a pre-c99 compiler.
70 */
71# if __STDC_VERSION__ - 0 >= 199901L
72# define _XOPEN_SOURCE 600
73# else
74# define _XOPEN_SOURCE 500
75# endif
6555b196 76#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \
6c109904 77 !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \
92164af9 78 !defined(__TANDEM) && !defined(__QNX__) && !defined(__MirBSD__)
85023577
JH
79#define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
80#define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
c902c9a6 81#endif
fb952206
JR
82#define _ALL_SOURCE 1
83#define _GNU_SOURCE 1
84#define _BSD_SOURCE 1
9a695fbf 85#define _NETBSD_SOURCE 1
9398b859 86#define _SGI_SOURCE 1
85023577 87
380395d0 88#if defined(WIN32) && !defined(__CYGWIN__) /* Both MinGW and MSVC */
8453c125 89# if defined (_MSC_VER) && !defined(_WIN32_WINNT)
41f29991
RJ
90# define _WIN32_WINNT 0x0502
91# endif
435bdf8c
MSO
92#define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */
93#include <winsock2.h>
94#include <windows.h>
380395d0 95#define GIT_WINDOWS_NATIVE
435bdf8c
MSO
96#endif
97
4050c0df
JH
98#include <unistd.h>
99#include <stdio.h>
100#include <sys/stat.h>
101#include <fcntl.h>
102#include <stddef.h>
103#include <stdlib.h>
104#include <stdarg.h>
105#include <string.h>
b3e103da 106#ifdef HAVE_STRINGS_H
6c109904
JS
107#include <strings.h> /* for strcasecmp() */
108#endif
4050c0df
JH
109#include <errno.h>
110#include <limits.h>
b2d05e06 111#ifdef NEEDS_SYS_PARAM_H
4050c0df 112#include <sys/param.h>
6ede7205 113#endif
4050c0df
JH
114#include <sys/types.h>
115#include <dirent.h>
85023577
JH
116#include <sys/time.h>
117#include <time.h>
118#include <signal.h>
f4626df5
JS
119#include <assert.h>
120#include <regex.h>
121#include <utime.h>
088d8802 122#include <syslog.h>
2844923d 123#ifndef NO_SYS_POLL_H
fdc12114 124#include <sys/poll.h>
2844923d
MD
125#else
126#include <poll.h>
127#endif
2f0aaaf9 128
cfc755d3
VR
129#if defined(__MINGW32__)
130/* pull in Windows compatibility stuff */
131#include "compat/mingw.h"
132#elif defined(_MSC_VER)
133#include "compat/msvc.h"
134#else
f4626df5 135#include <sys/wait.h>
ebae9ff9 136#include <sys/resource.h>
85023577 137#include <sys/socket.h>
80bbe72b 138#include <sys/ioctl.h>
eb80042c 139#include <termios.h>
2600973f 140#ifndef NO_SYS_SELECT_H
80bbe72b 141#include <sys/select.h>
2600973f 142#endif
85023577
JH
143#include <netinet/in.h>
144#include <netinet/tcp.h>
145#include <arpa/inet.h>
146#include <netdb.h>
147#include <pwd.h>
e2770979 148#include <sys/un.h>
2844923d 149#ifndef NO_INTTYPES_H
007e2ba6 150#include <inttypes.h>
2844923d
MD
151#else
152#include <stdint.h>
153#endif
6c109904
JS
154#ifdef NO_INTPTR_T
155/*
156 * On I16LP32, ILP32 and LP64 "long" is the save bet, however
157 * on LLP86, IL33LLP64 and P64 it needs to be "long long",
158 * while on IP16 and IP16L32 it is "int" (resp. "short")
159 * Size needs to match (or exceed) 'sizeof(void *)'.
160 * We can't take "long long" here as not everybody has it.
161 */
162typedef long intptr_t;
163typedef unsigned long uintptr_t;
164#endif
41b20017
RJ
165#if defined(__CYGWIN__)
166#undef _XOPEN_SOURCE
167#include <grp.h>
168#define _XOPEN_SOURCE 600
169#else
fb952206 170#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
85023577 171#include <grp.h>
fb952206 172#define _ALL_SOURCE 1
41b20017 173#endif
d75f8e61 174#endif
85023577 175
76759c7d
TB
176/* used on Mac OS X */
177#ifdef PRECOMPOSE_UNICODE
178#include "compat/precompose_utf8.h"
179#else
180#define precompose_str(in,i_nfd2nfc)
181#define precompose_argv(c,v)
182#define probe_utf8_pathname_composition(a,b)
183#endif
184
0539ecfd
JS
185#ifdef MKDIR_WO_TRAILING_SLASH
186#define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b))
187extern int compat_mkdir_wo_trailing_slash(const char*, mode_t);
188#endif
189
7f9e848c
JS
190#ifdef NO_STRUCT_ITIMERVAL
191struct itimerval {
192 struct timeval it_interval;
193 struct timeval it_value;
194}
195#endif
196
197#ifdef NO_SETITIMER
198#define setitimer(which,value,ovalue)
199#endif
200
e1c06886
DA
201#ifndef NO_LIBGEN_H
202#include <libgen.h>
203#else
204#define basename gitbasename
205extern char *gitbasename(char *);
206#endif
207
85023577
JH
208#ifndef NO_ICONV
209#include <iconv.h>
210#endif
4050c0df 211
684ec6c6
RS
212#ifndef NO_OPENSSL
213#include <openssl/ssl.h>
214#include <openssl/err.h>
215#endif
216
3b130ade
DM
217/* On most systems <netdb.h> would have given us this, but
218 * not on some systems (e.g. z/OS).
219 */
220#ifndef NI_MAXHOST
221#define NI_MAXHOST 1025
222#endif
223
224#ifndef NI_MAXSERV
225#define NI_MAXSERV 32
226#endif
227
d0c2449f
JH
228/* On most systems <limits.h> would have given us this, but
229 * not on some systems (e.g. GNU/Hurd).
230 */
231#ifndef PATH_MAX
232#define PATH_MAX 4096
233#endif
234
c4001d92
SP
235#ifndef PRIuMAX
236#define PRIuMAX "llu"
237#endif
238
607bb3ff
JS
239#ifndef PRIu32
240#define PRIu32 "u"
241#endif
242
243#ifndef PRIx32
244#define PRIx32 "x"
245#endif
246
5418d96d
RJ
247#ifndef PRIo32
248#define PRIo32 "o"
249#endif
250
80ba074f
JS
251#ifndef PATH_SEP
252#define PATH_SEP ':'
253#endif
254
cb6a22c0
CW
255#ifdef HAVE_PATHS_H
256#include <paths.h>
257#endif
258#ifndef _PATH_DEFPATH
259#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
260#endif
261
23326d14
JS
262#ifndef STRIP_EXTENSION
263#define STRIP_EXTENSION ""
264#endif
265
25fe217b
JS
266#ifndef has_dos_drive_prefix
267#define has_dos_drive_prefix(path) 0
268#endif
269
c2369bdf
CZ
270#ifndef offset_1st_component
271#define offset_1st_component(path) (is_dir_sep((path)[0]))
272#endif
273
25fe217b
JS
274#ifndef is_dir_sep
275#define is_dir_sep(c) ((c) == '/')
276#endif
277
d1c69255
TN
278#ifndef find_last_dir_sep
279#define find_last_dir_sep(path) strrchr(path, '/')
280#endif
281
e4ac953b 282#if defined(__HP_cc) && (__HP_cc >= 61000)
b6ab349b
MR
283#define NORETURN __attribute__((noreturn))
284#define NORETURN_PTR
6520c846 285#elif defined(__GNUC__) && !defined(NO_NORETURN)
4050c0df 286#define NORETURN __attribute__((__noreturn__))
18660bc9 287#define NORETURN_PTR __attribute__((__noreturn__))
aba7dea8
RJ
288#elif defined(_MSC_VER)
289#define NORETURN __declspec(noreturn)
290#define NORETURN_PTR
4050c0df
JH
291#else
292#define NORETURN
18660bc9 293#define NORETURN_PTR
4050c0df
JH
294#ifndef __attribute__
295#define __attribute__(x)
296#endif
297#endif
298
9fe3edc4
RJ
299/* The sentinel attribute is valid from gcc version 4.0 */
300#if defined(__GNUC__) && (__GNUC__ >= 4)
301#define LAST_ARG_MUST_BE_NULL __attribute__((sentinel))
302#else
303#define LAST_ARG_MUST_BE_NULL
304#endif
305
51ea5519
NP
306#include "compat/bswap.h"
307
cebcab18 308#include "wildmatch.h"
cebcab18 309
4050c0df 310/* General helper functions */
ebaa79f4 311extern void vreportf(const char *prefix, const char *err, va_list params);
3bc4181f 312extern void vwritef(int fd, const char *prefix, const char *err, va_list params);
a4f3131c 313extern NORETURN void usage(const char *err);
64b1cb74 314extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
a4f3131c
EFL
315extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
316extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
4050c0df 317extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
46efd2d9 318extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
4050c0df 319
f2be034c
BG
320#ifndef NO_OPENSSL
321#ifdef APPLE_COMMON_CRYPTO
322#include "compat/apple-common-crypto.h"
323#else
324#include <openssl/evp.h>
325#include <openssl/hmac.h>
326#endif /* APPLE_COMMON_CRYPTO */
327#include <openssl/x509v3.h>
328#endif /* NO_OPENSSL */
329
e208f9cc
JK
330/*
331 * Let callers be aware of the constant return value; this can help
9798f7e5
MK
332 * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
333 * because some compilers may not support variadic macros. Since we're only
334 * trying to help gcc, anyway, it's OK; other compilers will fall back to
335 * using the function as usual.
e208f9cc 336 */
ff0a80af 337#if defined(__GNUC__)
87fe5df3
JK
338static inline int const_error(void)
339{
340 return -1;
341}
342#define error(...) (error(__VA_ARGS__), const_error())
e208f9cc
JK
343#endif
344
18660bc9 345extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
3bc4181f 346extern void set_error_routine(void (*routine)(const char *err, va_list params));
c19a490e 347extern void set_die_is_recursing_routine(int (*routine)(void));
39a3f5ea 348
95662315 349extern int starts_with(const char *str, const char *prefix);
95662315 350extern int ends_with(const char *str, const char *suffix);
698a68be 351
fbca5837
MV
352static inline const char *skip_prefix(const char *str, const char *prefix)
353{
ba399c46
DK
354 do {
355 if (!*prefix)
356 return str;
357 } while (*str++ == *prefix++);
358 return NULL;
fbca5837
MV
359}
360
b130a72b 361#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
4050c0df
JH
362
363#ifndef PROT_READ
364#define PROT_READ 1
365#define PROT_WRITE 2
366#define MAP_PRIVATE 1
4050c0df
JH
367#endif
368
d6779124
SP
369#define mmap git_mmap
370#define munmap git_munmap
371extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
372extern int git_munmap(void *start, size_t length);
4050c0df 373
b130a72b
JL
374#else /* NO_MMAP || USE_WIN32_MMAP */
375
376#include <sys/mman.h>
377
378#endif /* NO_MMAP || USE_WIN32_MMAP */
379
380#ifdef NO_MMAP
381
5faaf246 382/* This value must be multiple of (pagesize * 2) */
8c82534d
SP
383#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
384
4050c0df
JH
385#else /* NO_MMAP */
386
5faaf246 387/* This value must be multiple of (pagesize * 2) */
22bac0ea
SP
388#define DEFAULT_PACKED_GIT_WINDOW_SIZE \
389 (sizeof(void*) >= 8 \
390 ? 1 * 1024 * 1024 * 1024 \
391 : 32 * 1024 * 1024)
4050c0df
JH
392
393#endif /* NO_MMAP */
394
fcf3a21a
GV
395#ifndef MAP_FAILED
396#define MAP_FAILED ((void *)-1)
397#endif
398
fdb2a2a6
JH
399#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
400#define on_disk_bytes(st) ((st).st_size)
401#else
402#define on_disk_bytes(st) ((st).st_blocks * 512)
403#endif
404
22bac0ea 405#define DEFAULT_PACKED_GIT_LIMIT \
ecaebf4a 406 ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
8c82534d 407
6900679c
SH
408#ifdef NO_PREAD
409#define pread git_pread
410extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
411#endif
14086b0a
SP
412/*
413 * Forward decl that will remind us if its twin in cache.h changes.
414 * This function is used in compat/pread.c. But we can't include
415 * cache.h there.
416 */
417extern ssize_t read_in_full(int fd, void *buf, size_t count);
6900679c 418
4050c0df
JH
419#ifdef NO_SETENV
420#define setenv gitsetenv
421extern int gitsetenv(const char *, const char *, int);
422#endif
423
ca5bb5d5
SP
424#ifdef NO_MKDTEMP
425#define mkdtemp gitmkdtemp
426extern char *gitmkdtemp(char *);
427#endif
428
0620b39b
DA
429#ifdef NO_MKSTEMPS
430#define mkstemps gitmkstemps
431extern int gitmkstemps(char *, int);
432#endif
433
731043fd
JR
434#ifdef NO_UNSETENV
435#define unsetenv gitunsetenv
436extern void gitunsetenv(const char *);
437#endif
438
4050c0df
JH
439#ifdef NO_STRCASESTR
440#define strcasestr gitstrcasestr
441extern char *gitstrcasestr(const char *haystack, const char *needle);
442#endif
443
817151e6
PE
444#ifdef NO_STRLCPY
445#define strlcpy gitstrlcpy
446extern size_t gitstrlcpy(char *, const char *, size_t);
447#endif
448
bc6b4f52
JR
449#ifdef NO_STRTOUMAX
450#define strtoumax gitstrtoumax
451extern uintmax_t gitstrtoumax(const char *, char **, int);
97000ba6
JS
452#define strtoimax gitstrtoimax
453extern intmax_t gitstrtoimax(const char *, char **, int);
bc6b4f52
JR
454#endif
455
fa0c87c3
AR
456#ifdef NO_HSTRERROR
457#define hstrerror githstrerror
458extern const char *githstrerror(int herror);
459#endif
460
b21b9f1d
RS
461#ifdef NO_MEMMEM
462#define memmem gitmemmem
463void *gitmemmem(const void *haystack, size_t haystacklen,
464 const void *needle, size_t needlelen);
465#endif
466
40036bed
MK
467#ifdef NO_GETPAGESIZE
468#define getpagesize() sysconf(_SC_PAGESIZE)
469#endif
470
cba22528 471#ifdef FREAD_READS_DIRECTORIES
c5445fe0
JS
472#ifdef fopen
473#undef fopen
474#endif
cba22528
BC
475#define fopen(a,b) git_fopen(a,b)
476extern FILE *git_fopen(const char*, const char*);
477#endif
478
c4582f93 479#ifdef SNPRINTF_RETURNS_BOGUS
ab03803c
BS
480#ifdef snprintf
481#undef snprintf
482#endif
c4582f93
MR
483#define snprintf git_snprintf
484extern int git_snprintf(char *str, size_t maxsize,
485 const char *format, ...);
ab03803c
BS
486#ifdef vsnprintf
487#undef vsnprintf
488#endif
c4582f93
MR
489#define vsnprintf git_vsnprintf
490extern int git_vsnprintf(char *str, size_t maxsize,
491 const char *format, va_list ap);
492#endif
493
726c8ef5
JS
494#ifdef __GLIBC_PREREQ
495#if __GLIBC_PREREQ(2, 1)
496#define HAVE_STRCHRNUL
137c6eaa 497#define HAVE_MEMPCPY
726c8ef5
JS
498#endif
499#endif
500
501#ifndef HAVE_STRCHRNUL
659c69cf 502#define strchrnul gitstrchrnul
9e79f00f
AE
503static inline char *gitstrchrnul(const char *s, int c)
504{
505 while (*s && *s != c)
506 s++;
507 return (char *)s;
508}
659c69cf
RS
509#endif
510
137c6eaa
JN
511#ifndef HAVE_MEMPCPY
512#define mempcpy gitmempcpy
513static inline void *gitmempcpy(void *dest, const void *src, size_t n)
514{
515 return (char *)memcpy(dest, src, n) + n;
516}
517#endif
518
da523cc5
MP
519#ifdef NO_INET_PTON
520int inet_pton(int af, const char *src, void *dst);
521#endif
522
523#ifdef NO_INET_NTOP
524const char *inet_ntop(int af, const void *src, char *dst, size_t size);
525#endif
526
7c3ecb32 527extern void release_pack_memory(size_t);
97bfeb34 528
851c34b0
JS
529typedef void (*try_to_free_t)(size_t);
530extern try_to_free_t set_try_to_free_routine(try_to_free_t);
a9a74636 531
61f76a36
KS
532#ifdef HAVE_ALLOCA_H
533# include <alloca.h>
534# define xalloca(size) (alloca(size))
535# define xalloca_free(p) do {} while (0)
536#else
537# define xalloca(size) (xmalloc(size))
538# define xalloca_free(p) (free(p))
539#endif
112db553
LT
540extern char *xstrdup(const char *str);
541extern void *xmalloc(size_t size);
5bf9219d 542extern void *xmallocz(size_t size);
112db553
LT
543extern void *xmemdupz(const void *data, size_t len);
544extern char *xstrndup(const char *str, size_t len);
545extern void *xrealloc(void *ptr, size_t size);
546extern void *xcalloc(size_t nmemb, size_t size);
547extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
548extern ssize_t xread(int fd, void *buf, size_t len);
549extern ssize_t xwrite(int fd, const void *buf, size_t len);
9aa91af0 550extern ssize_t xpread(int fd, void *buf, size_t len, off_t offset);
112db553
LT
551extern int xdup(int fd);
552extern FILE *xfdopen(int fd, const char *mode);
553extern int xmkstemp(char *template);
463db9b1 554extern int xmkstemp_mode(char *template, int mode);
6e180cdc 555extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
8640d496 556extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1);
f21a47b2 557
dc49cd76
SP
558static inline size_t xsize_t(off_t len)
559{
46be82df
TR
560 if (len > (size_t) len)
561 die("Cannot handle files this big");
dc49cd76
SP
562 return (size_t)len;
563}
564
5bb1cda5 565static inline int has_extension(const char *filename, const char *ext)
83a2b841 566{
5bb1cda5
RS
567 size_t len = strlen(filename);
568 size_t extlen = strlen(ext);
83a2b841
RS
569 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
570}
571
f1589d10
RJ
572/* in ctype.c, for kwset users */
573extern const char tolower_trans_tbl[256];
574
4050c0df 575/* Sane ctype - no locale, and works with signed chars */
c2e9364a 576#undef isascii
4050c0df
JH
577#undef isspace
578#undef isdigit
579#undef isalpha
580#undef isalnum
0fcec2ce 581#undef isprint
43ccdf56
NK
582#undef islower
583#undef isupper
4050c0df
JH
584#undef tolower
585#undef toupper
1c149ab2
NTND
586#undef iscntrl
587#undef ispunct
588#undef isxdigit
2adf7247 589
ca5ab7d1 590extern const unsigned char sane_ctype[256];
4050c0df
JH
591#define GIT_SPACE 0x01
592#define GIT_DIGIT 0x02
593#define GIT_ALPHA 0x04
8cc32992 594#define GIT_GLOB_SPECIAL 0x08
f9b7cce6 595#define GIT_REGEX_SPECIAL 0x10
2f6c9760 596#define GIT_PATHSPEC_MAGIC 0x20
1c149ab2
NTND
597#define GIT_CNTRL 0x40
598#define GIT_PUNCT 0x80
4050c0df 599#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
c2e9364a 600#define isascii(x) (((x) & ~0x7f) == 0)
4050c0df
JH
601#define isspace(x) sane_istest(x,GIT_SPACE)
602#define isdigit(x) sane_istest(x,GIT_DIGIT)
603#define isalpha(x) sane_istest(x,GIT_ALPHA)
604#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
0fcec2ce 605#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
43ccdf56
NK
606#define islower(x) sane_iscase(x, 1)
607#define isupper(x) sane_iscase(x, 0)
8cc32992 608#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
f9b7cce6 609#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
1c149ab2
NTND
610#define iscntrl(x) (sane_istest(x,GIT_CNTRL))
611#define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
612 GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
613#define isxdigit(x) (hexval_table[x] != -1)
4050c0df
JH
614#define tolower(x) sane_case((unsigned char)(x), 0x20)
615#define toupper(x) sane_case((unsigned char)(x), 0)
2f6c9760 616#define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
4050c0df
JH
617
618static inline int sane_case(int x, int high)
619{
620 if (sane_istest(x, GIT_ALPHA))
621 x = (x & ~0x20) | high;
622 return x;
623}
624
43ccdf56
NK
625static inline int sane_iscase(int x, int is_lower)
626{
627 if (!sane_istest(x, GIT_ALPHA))
628 return 0;
629
630 if (is_lower)
631 return (x & 0x20) != 0;
632 else
633 return (x & 0x20) == 0;
634}
635
6aead43d
JM
636static inline int strtoul_ui(char const *s, int base, unsigned int *result)
637{
638 unsigned long ul;
639 char *p;
640
641 errno = 0;
642 ul = strtoul(s, &p, base);
643 if (errno || *p || p == s || (unsigned int) ul != ul)
644 return -1;
645 *result = ul;
646 return 0;
647}
648
7791ecbc
JH
649static inline int strtol_i(char const *s, int base, int *result)
650{
651 long ul;
652 char *p;
653
654 errno = 0;
655 ul = strtol(s, &p, base);
656 if (errno || *p || p == s || (int) ul != ul)
657 return -1;
658 *result = ul;
659 return 0;
660}
661
43fe901b
BD
662#ifdef INTERNAL_QSORT
663void git_qsort(void *base, size_t nmemb, size_t size,
664 int(*compar)(const void *, const void *));
665#define qsort git_qsort
666#endif
667
81a24b52
AR
668#ifndef DIR_HAS_BSD_GROUP_SEMANTICS
669# define FORCE_DIR_SET_GID S_ISGID
670#else
671# define FORCE_DIR_SET_GID 0
672#endif
673
c06ff490
KB
674#ifdef NO_NSEC
675#undef USE_NSEC
676#define ST_CTIME_NSEC(st) 0
677#define ST_MTIME_NSEC(st) 0
678#else
c567383b
BG
679#ifdef USE_ST_TIMESPEC
680#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
681#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
682#else
c06ff490
KB
683#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
684#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
685#endif
c567383b 686#endif
c06ff490 687
34779c53
JS
688#ifdef UNRELIABLE_FSTAT
689#define fstat_is_reliable() 0
690#else
691#define fstat_is_reliable() 1
692#endif
693
ab8632ae 694#ifndef va_copy
26db0f2e
JN
695/*
696 * Since an obvious implementation of va_list would be to make it a
697 * pointer into the stack frame, a simple assignment will work on
698 * many systems. But let's try to be more portable.
699 */
700#ifdef __va_copy
701#define va_copy(dst, src) __va_copy(dst, src)
702#else
703#define va_copy(dst, src) ((dst) = (src))
704#endif
ab8632ae
JK
705#endif
706
fc71db39
AR
707/*
708 * Preserves errno, prints a message, but gives no warning for ENOENT.
709 * Always returns the return value of unlink(2).
710 */
711int unlink_or_warn(const char *path);
d1723296
PC
712/*
713 * Likewise for rmdir(2).
714 */
715int rmdir_or_warn(const char *path);
80d706af
PC
716/*
717 * Calls the correct function out of {unlink,rmdir}_or_warn based on
718 * the supplied file mode.
719 */
720int remove_or_warn(unsigned int mode, const char *path);
fc71db39 721
e5c52c98
JN
722/*
723 * Call access(2), but warn for any error except "missing file"
724 * (ENOENT or ENOTDIR).
725 */
4698c8fe
JN
726#define ACCESS_EACCES_OK (1U << 0)
727int access_or_warn(const char *path, int mode, unsigned flag);
728int access_or_die(const char *path, int mode, unsigned flag);
ba8bd830 729
55b38a48
JH
730/* Warn on an inaccessible file that ought to be accessible */
731void warn_on_inaccessible(const char *path);
732
2f705875
JK
733/* Get the passwd entry for the UID of the current process. */
734struct passwd *xgetpwuid_self(void);
735
66547547
JK
736#ifdef GMTIME_UNRELIABLE_ERRORS
737struct tm *git_gmtime(const time_t *);
738struct tm *git_gmtime_r(const time_t *, struct tm *);
739#define gmtime git_gmtime
740#define gmtime_r git_gmtime_r
741#endif
742
4050c0df 743#endif