diff options
| -rw-r--r-- | editors/sed.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/editors/sed.c b/editors/sed.c index c8bb503..4e9babb 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -282,7 +282,7 @@ static int index_of_next_unescaped_regexp_delim(int delimiter, const char *str) static int parse_regex_delim(const char *cmdstr, char **match, char **replace) { const char *cmdstr_ptr = cmdstr; - char delimiter; + unsigned char delimiter; int idx = 0; /* verify that the 's' or 'y' is followed by something. That something @@ -297,7 +297,7 @@ static int parse_regex_delim(const char *cmdstr, char **match, char **replace) /* save the replacement string */ cmdstr_ptr += idx + 1; - idx = index_of_next_unescaped_regexp_delim(-delimiter, cmdstr_ptr); + idx = index_of_next_unescaped_regexp_delim(- (int)delimiter, cmdstr_ptr); *replace = copy_parsing_escapes(cmdstr_ptr, idx); return ((cmdstr_ptr - cmdstr) + idx); @@ -322,10 +322,11 @@ static int get_address(const char *my_str, int *linenum, regex_t ** regex) char *temp; delimiter = '/'; - if (*my_str == '\\') delimiter = *++pos; + if (*my_str == '\\') + delimiter = *++pos; next = index_of_next_unescaped_regexp_delim(delimiter, ++pos); temp = copy_parsing_escapes(pos, next); - *regex = xmalloc(sizeof(regex_t)); + *regex = xzalloc(sizeof(regex_t)); xregcomp(*regex, temp, G.regex_type|REG_NEWLINE); free(temp); /* Move position to next character after last delimiter */ @@ -434,8 +435,10 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, const char *substr) /* compile the match string into a regex */ if (*match != '\0') { /* If match is empty, we use last regex used at runtime */ - sed_cmd->sub_match = xmalloc(sizeof(regex_t)); + sed_cmd->sub_match = xzalloc(sizeof(regex_t)); + dbg("xregcomp('%s',%x)", match, cflags); xregcomp(sed_cmd->sub_match, match, cflags); + dbg("regcomp ok"); } free(match); @@ -717,8 +720,12 @@ static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p) G.previous_regex_ptr = current_regex; /* Find the first match */ - if (REG_NOMATCH == regexec(current_regex, line, 10, G.regmatch, 0)) + dbg("matching '%s'", line); + if (REG_NOMATCH == regexec(current_regex, line, 10, G.regmatch, 0)) { + dbg("no match"); return 0; + } + dbg("match"); /* Initialize temporary output buffer. */ G.pipeline.buf = xmalloc(PIPE_GROW); @@ -730,9 +737,10 @@ static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p) int i; /* Work around bug in glibc regexec, demonstrated by: - echo " a.b" | busybox sed 's [^ .]* x g' - The match_count check is so not to break - echo "hi" | busybox sed 's/^/!/g' */ + * echo " a.b" | busybox sed 's [^ .]* x g' + * The match_count check is so not to break + * echo "hi" | busybox sed 's/^/!/g' + */ if (!G.regmatch[0].rm_so && !G.regmatch[0].rm_eo && match_count) { pipe_putc(*line++); continue; @@ -763,11 +771,14 @@ static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p) altered++; /* if we're not doing this globally, get out now */ - if (sed_cmd->which_match) + if (sed_cmd->which_match != 0) + break; + + if (*line == '\0') break; //maybe (G.regmatch[0].rm_eo ? REG_NOTBOL : 0) instead of unconditional REG_NOTBOL? - } while (*line && regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH); + } while (regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH); /* Copy rest of string into output pipeline */ while (1) { @@ -1067,8 +1078,8 @@ static void process_files(void) } /* actual sedding */ - //bb_error_msg("pattern_space:'%s' next_line:'%s' cmd:%c", - //pattern_space, next_line, sed_cmd->cmd); + dbg("pattern_space:'%s' next_line:'%s' cmd:%c", + pattern_space, next_line, sed_cmd->cmd); switch (sed_cmd->cmd) { /* Print line number */ @@ -1115,6 +1126,7 @@ static void process_files(void) case 's': if (!do_subst_command(sed_cmd, &pattern_space)) break; + dbg("do_subst_command succeeeded:'%s'", pattern_space); substituted |= 1; /* handle p option */ |