sed: code shrink
function old new delta
process_files 2181 2173 -8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/editors/sed.c b/editors/sed.c
index 87fc755..85c8466 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -737,6 +737,8 @@
/* Now loop through, substituting for matches */
do {
+ int start = G.regmatch[0].rm_so;
+ int end = G.regmatch[0].rm_eo;
int i;
match_count++;
@@ -746,16 +748,16 @@
if (sed_cmd->which_match
&& (sed_cmd->which_match != match_count)
) {
- for (i = 0; i < G.regmatch[0].rm_eo; i++)
+ for (i = 0; i < end; i++)
pipe_putc(*line++);
/* Null match? Print one more char */
- if (G.regmatch[0].rm_so == i && *line)
+ if (start == end && *line)
pipe_putc(*line++);
goto next;
}
/* Print everything before the match */
- for (i = 0; i < G.regmatch[0].rm_so; i++)
+ for (i = 0; i < start; i++)
pipe_putc(line[i]);
/* Then print the substitution string,
@@ -765,25 +767,25 @@
* second is "" before "d", third is "" after "d".
* Second match is NOT replaced!
*/
- if (prev_match_empty || i != 0) {
- dbg("inserting replacement at %d in '%s'", i, line);
+ if (prev_match_empty || start != 0) {
+ dbg("inserting replacement at %d in '%s'", start, line);
do_subst_w_backrefs(line, sed_cmd->string);
} else {
- dbg("NOT inserting replacement at %d in '%s'", i, line);
+ dbg("NOT inserting replacement at %d in '%s'", start, line);
}
/* If matched string is empty (f.e. "c*" pattern),
* copy verbatim one char after it before attempting more matches
*/
- prev_match_empty = (G.regmatch[0].rm_eo == i);
- if (prev_match_empty && line[i]) {
- pipe_putc(line[i]);
- G.regmatch[0].rm_eo++;
+ prev_match_empty = (start == end);
+ if (prev_match_empty && line[end]) {
+ pipe_putc(line[end]);
+ end++;
}
/* Advance past the match */
- dbg("line += %d", G.regmatch[0].rm_eo);
- line += G.regmatch[0].rm_eo;
+ dbg("line += %d", end);
+ line += end;
/* Flag that something has changed */
altered = 1;
@@ -798,7 +800,7 @@
tried_at_eol = 1;
}
-//maybe (G.regmatch[0].rm_eo ? REG_NOTBOL : 0) instead of unconditional REG_NOTBOL?
+//maybe (end ? REG_NOTBOL : 0) instead of unconditional REG_NOTBOL?
} while (regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH);
/* Copy rest of string into output pipeline */