skip_prefix: add case-insensitive variant

diff --git a/git-compat-util.h b/git-compat-util.h
index 8a4a3f85e7ba0a658420c477e1af82e804d7fd36..4be15e5eb233ffdfbce17826c20e841e56f14630 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -189,6 +189,9 @@
 #include <sys/sysctl.h>
 #endif
 
+#if defined(__CYGWIN__)
+#include "compat/cygwin.h"
+#endif
 #if defined(__MINGW32__)
 /* pull in Windows compatibility stuff */
 #include "compat/mingw.h"
@@ -445,7 +448,6 @@ extern void (*get_error_routine(void))(const char *err, va_list params);
 extern void set_warn_routine(void (*routine)(const char *warn, va_list params));
 extern void (*get_warn_routine(void))(const char *warn, va_list params);
 extern void set_die_is_recursing_routine(int (*routine)(void));
-extern void set_error_handle(FILE *);
 
 extern int starts_with(const char *str, const char *prefix);
 
@@ -884,6 +886,12 @@ static inline size_t xsize_t(off_t len)
 __attribute__((format (printf, 3, 4)))
 extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
 
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX 256
+#endif
+
+extern int xgethostname(char *buf, size_t len);
+
 /* in ctype.c, for kwset users */
 extern const unsigned char tolower_trans_tbl[256];
 
@@ -948,6 +956,23 @@ static inline int sane_iscase(int x, int is_lower)
                return (x & 0x20) == 0;
 }
 
+/*
+ * Like skip_prefix, but compare case-insensitively. Note that the comparison
+ * is done via tolower(), so it is strictly ASCII (no multi-byte characters or
+ * locale-specific conversions).
+ */
+static inline int skip_iprefix(const char *str, const char *prefix,
+                              const char **out)
+{
+       do {
+               if (!*prefix) {
+                       *out = str;
+                       return 1;
+               }
+       } while (tolower(*str++) == tolower(*prefix++));
+       return 0;
+}
+
 static inline int strtoul_ui(char const *s, int base, unsigned int *result)
 {
        unsigned long ul;
@@ -1058,6 +1083,15 @@ static inline int regexec_buf(const regex_t *preg, const char *buf, size_t size,
 #define HAVE_VARIADIC_MACROS 1
 #endif
 
+#ifdef HAVE_VARIADIC_MACROS
+__attribute__((format (printf, 3, 4))) NORETURN
+void BUG_fl(const char *file, int line, const char *fmt, ...);
+#define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
+#else
+__attribute__((format (printf, 1, 2))) NORETURN
+void BUG(const char *fmt, ...);
+#endif
+
 /*
  * Preserves errno, prints a message, but gives no warning for ENOENT.
  * Returns 0 on success, which includes trying to unlink an object that does