Add new regex code from glibc, this is almost double size of the earlier one, but passes sed tests (and thus allows making sed shrink from 91k to 42k

1 files changed, 45 insertions, 0 deletions

diff --git a/libc/misc/regex/_regex.h b/libc/misc/regex/_regex.h
new file mode 100644
index 000000000..cf3a5a2c1
--- /dev/null
+++ b/libc/misc/regex/_regex.h
@@ -0,0 +1,45 @@
+/* this file is copied from libc/include/regex.h */
+
+#ifndef _REGEX_H
+#include <regex.h>
+
+/* Document internal interfaces.  */
+extern reg_syntax_t __re_set_syntax (reg_syntax_t syntax);
+
+extern const char *__re_compile_pattern (const char *pattern, size_t length,
+					 struct re_pattern_buffer *buffer);
+
+extern int __re_compile_fastmap (struct re_pattern_buffer *buffer);
+
+extern int __re_search (struct re_pattern_buffer *buffer, const char *string,
+			int length, int start, int range,
+			struct re_registers *regs);
+
+extern int __re_search_2
+  (struct re_pattern_buffer *buffer, const char *string1,
+   int length1, const char *string2, int length2,
+   int start, int range, struct re_registers *regs, int stop);
+
+extern int __re_match
+  (struct re_pattern_buffer *buffer, const char *string,
+   int length, int start, struct re_registers *regs);
+
+extern int __re_match_2
+  (struct re_pattern_buffer *buffer, const char *string1,
+   int length1, const char *string2, int length2,
+   int start, struct re_registers *regs, int stop);
+
+extern void __re_set_registers
+  (struct re_pattern_buffer *buffer, struct re_registers *regs,
+   unsigned num_regs, regoff_t *starts, regoff_t *ends);
+
+extern int __regcomp (regex_t *__preg, const char *__pattern, int __cflags);
+
+extern int __regexec (const regex_t *__preg, const char *__string,
+		      size_t __nmatch, regmatch_t __pmatch[], int __eflags);
+
+extern size_t __regerror (int __errcode, const regex_t *__preg,
+			  char *__errbuf, size_t __errbuf_size);
+
+extern void __regfree (regex_t *__preg);
+#endif