sscanf/strtoul: parse integers robustly

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

diff --git a/git-compat-util.h b/git-compat-util.h
index c1bcb001a51324ebcb66bfb0a695e20ff366df02..5f6a281b78245bbb4e1e480d81cfb8c1b4cfa6ac 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -1,6 +1,8 @@
 #ifndef GIT_COMPAT_UTIL_H
 #define GIT_COMPAT_UTIL_H
 
+#define _FILE_OFFSET_BITS 64
+
 #ifndef FLEX_ARRAY
 #if defined(__GNUC__) && (__GNUC__ < 3)
 #define FLEX_ARRAY 0
@@ -47,9 +49,15 @@
 #include <netdb.h>
 #include <pwd.h>
 #include <inttypes.h>
+#if defined(__CYGWIN__)
+#undef _XOPEN_SOURCE
+#include <grp.h>
+#define _XOPEN_SOURCE 600
+#else
 #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
 #include <grp.h>
 #define _ALL_SOURCE 1
+#endif
 
 #ifndef NO_ICONV
 #include <iconv.h>
@@ -62,6 +70,10 @@
 #define PATH_MAX 4096
 #endif
 
+#ifndef PRIuMAX
+#define PRIuMAX "llu"
+#endif
+
 #ifdef __GNUC__
 #define NORETURN __attribute__((__noreturn__))
 #else
@@ -75,7 +87,7 @@
 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 warn(const char *err, ...) __attribute__((format (printf, 1, 2)));
+extern void warning(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);
@@ -96,11 +108,14 @@ extern void set_warn_routine(void (*routine)(const char *warn, va_list params));
 extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
 extern int git_munmap(void *start, size_t length);
 
+/* This value must be multiple of (pagesize * 2) */
 #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
 
 #else /* NO_MMAP */
 
 #include <sys/mman.h>
+
+/* This value must be multiple of (pagesize * 2) */
 #define DEFAULT_PACKED_GIT_WINDOW_SIZE \
        (sizeof(void*) >= 8 \
                ?  1 * 1024 * 1024 * 1024 \
@@ -136,6 +151,11 @@ extern char *gitstrcasestr(const char *haystack, const char *needle);
 extern size_t gitstrlcpy(char *, const char *, size_t);
 #endif
 
+#ifdef NO_STRTOUMAX
+#define strtoumax gitstrtoumax
+extern uintmax_t gitstrtoumax(const char *, char **, int);
+#endif
+
 extern void release_pack_memory(size_t);
 
 static inline char* xstrdup(const char *str)
@@ -238,6 +258,11 @@ static inline ssize_t xwrite(int fd, const void *buf, size_t len)
        }
 }
 
+static inline size_t xsize_t(off_t len)
+{
+       return (size_t)len;
+}
+
 static inline int has_extension(const char *filename, const char *ext)
 {
        size_t len = strlen(filename);
@@ -271,4 +296,22 @@ static inline int sane_case(int x, int high)
        return x;
 }
 
+static inline int prefixcmp(const char *str, const char *prefix)
+{
+       return strncmp(str, prefix, strlen(prefix));
+}
+
+static inline int strtoul_ui(char const *s, int base, unsigned int *result)
+{
+       unsigned long ul;
+       char *p;
+
+       errno = 0;
+       ul = strtoul(s, &p, base);
+       if (errno || *p || p == s || (unsigned int) ul != ul)
+               return -1;
+       *result = ul;
+       return 0;
+}
+
 #endif