git-rev-parse --parseopt

[git.git] / git-compat-util.h

diff --git a/git-compat-util.h b/git-compat-util.h
index 2c84016ac9942eb62c24d143a551c8f1c8f48bb6..7b29d1b905c618a50704a7b2c38041f71c942e71 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -21,6 +21,9 @@
 
 #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
 
+/* Approximation of the length of the decimal representation of this type. */
+#define decimal_length(x)      ((int)(sizeof(x) * 2.56 + 0.5) + 1)
+
 #if !defined(__APPLE__) && !defined(__FreeBSD__)
 #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
 #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
@@ -144,6 +147,11 @@ extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
 extern int gitsetenv(const char *, const char *, int);
 #endif
 
+#ifdef NO_MKDTEMP
+#define mkdtemp gitmkdtemp
+extern char *gitmkdtemp(char *);
+#endif
+
 #ifdef NO_UNSETENV
 #define unsetenv gitunsetenv
 extern void gitunsetenv(const char *);
@@ -164,6 +172,17 @@ extern size_t gitstrlcpy(char *, const char *, size_t);
 extern uintmax_t gitstrtoumax(const char *, char **, int);
 #endif
 
+#ifdef NO_HSTRERROR
+#define hstrerror githstrerror
+extern const char *githstrerror(int herror);
+#endif
+
+#ifdef NO_MEMMEM
+#define memmem gitmemmem
+void *gitmemmem(const void *haystack, size_t haystacklen,
+                const void *needle, size_t needlelen);
+#endif
+
 extern void release_pack_memory(size_t, int);
 
 static inline char* xstrdup(const char *str)
@@ -197,6 +216,20 @@ static inline void *xmalloc(size_t size)
        return ret;
 }
 
+static inline void *xmemdupz(const void *data, size_t len)
+{
+       char *p = xmalloc(len + 1);
+       memcpy(p, data, len);
+       p[len] = '\0';
+       return p;
+}
+
+static inline char *xstrndup(const char *str, size_t len)
+{
+       char *p = memchr(str, '\0', len);
+       return xmemdupz(str, p ? p - str : len);
+}
+
 static inline void *xrealloc(void *ptr, size_t size)
 {
        void *ret = realloc(ptr, size);
@@ -266,6 +299,32 @@ static inline ssize_t xwrite(int fd, const void *buf, size_t len)
        }
 }
 
+static inline int xdup(int fd)
+{
+       int ret = dup(fd);
+       if (ret < 0)
+               die("dup failed: %s", strerror(errno));
+       return ret;
+}
+
+static inline FILE *xfdopen(int fd, const char *mode)
+{
+       FILE *stream = fdopen(fd, mode);
+       if (stream == NULL)
+               die("Out of memory? fdopen failed: %s", strerror(errno));
+       return stream;
+}
+
+static inline int xmkstemp(char *template)
+{
+       int fd;
+
+       fd = mkstemp(template);
+       if (fd < 0)
+               die("Unable to create temporary file: %s", strerror(errno));
+       return fd;
+}
+
 static inline size_t xsize_t(off_t len)
 {
        return (size_t)len;
@@ -322,4 +381,17 @@ static inline int strtoul_ui(char const *s, int base, unsigned int *result)
        return 0;
 }
 
+static inline int strtol_i(char const *s, int base, int *result)
+{
+       long ul;
+       char *p;
+
+       errno = 0;
+       ul = strtol(s, &p, base);
+       if (errno || *p || p == s || (int) ul != ul)
+               return -1;
+       *result = ul;
+       return 0;
+}
+
 #endif