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-rw-r--r--quote.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/quote.c b/quote.c
index b281a8fe45..53b98a5b84 100644
--- a/quote.c
+++ b/quote.c
@@ -453,3 +453,40 @@ void tcl_quote_buf(struct strbuf *sb, const char *src)
}
strbuf_addch(sb, '"');
}
+
+void basic_regex_quote_buf(struct strbuf *sb, const char *src)
+{
+ char c;
+
+ if (*src == '^') {
+ /* only beginning '^' is special and needs quoting */
+ strbuf_addch(sb, '\\');
+ strbuf_addch(sb, *src++);
+ }
+ if (*src == '*')
+ /* beginning '*' is not special, no quoting */
+ strbuf_addch(sb, *src++);
+
+ while ((c = *src++)) {
+ switch (c) {
+ case '[':
+ case '.':
+ case '\\':
+ case '*':
+ strbuf_addch(sb, '\\');
+ strbuf_addch(sb, c);
+ break;
+
+ case '$':
+ /* only the end '$' is special and needs quoting */
+ if (*src == '\0')
+ strbuf_addch(sb, '\\');
+ strbuf_addch(sb, c);
+ break;
+
+ default:
+ strbuf_addch(sb, c);
+ break;
+ }
+ }
+}