diff options
| -rw-r--r-- | editors/sed.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/editors/sed.c b/editors/sed.c index 834f066..1673ee2 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -95,7 +95,7 @@ typedef struct sed_cmd_s { /* Note: GNU/POSIX sed does not save more than nine backrefs, so * we only use 4 bits to hold the number */ unsigned int sub_g:1; /* sed -e 's/foo/bar/g' (global) */ - unsigned int sub_p:2; /* sed -e 's/foo/bar/p' (print substitution) */ + unsigned int sub_p:1; /* sed -e 's/foo/bar/p' (print substitution) */ /* TRANSLATE COMMAND */ char *translate; @@ -267,7 +267,6 @@ static int parse_subst_cmd(sed_cmd_t * const sed_cmd, const char *substr) * * (all three of the '/' slashes are mandatory) */ - idx = parse_regex_delim(substr, &match, &sed_cmd->replace); /* determine the number of back references in the match string */ @@ -473,7 +472,7 @@ static char *parse_cmd_str(sed_cmd_t * const sed_cmd, char *cmdstr) /* if it wasnt a single-letter command that takes no arguments * then it must be an invalid command. */ - else if (strchr("nNpPqd=", sed_cmd->cmd) == 0) { + else if (strchr("dghnNpPqx=", sed_cmd->cmd) == 0) { bb_error_msg_and_die("Unsupported command %c", sed_cmd->cmd); } @@ -743,10 +742,10 @@ static int do_subst_command(const sed_cmd_t *sed_cmd, char **line) altered++; /* if we're not doing this globally, get out now */ - if (!sed_cmd->sub_g) + if (!sed_cmd->sub_g) { break; + } } - for (; *hackline; hackline++) pipeputc(*hackline); if (thepipe.buf[thepipe.idx] == PIPE_MAGIC) thepipe.buf[thepipe.idx] = 0; @@ -774,6 +773,7 @@ static sed_cmd_t *branch_to(const char *label) static void process_file(FILE *file) { char *pattern_space; /* Posix requires it be able to hold at least 8192 bytes */ + char *hold_space = NULL; /* Posix requires it be able to hold at least 8192 bytes */ static int linenum = 0; /* GNU sed does not restart counting lines at EOF */ unsigned int still_in_range = 0; int altered; @@ -975,6 +975,20 @@ static void process_file(FILE *file) } } break; + case 'g': /* Replace pattern space with hold space */ + free(pattern_space); + pattern_space = strdup(hold_space); + break; + case 'h': /* Replace hold space with pattern space */ + free(hold_space); + hold_space = strdup(pattern_space); + break; + case 'x': { /* Swap hold and pattern space */ + char *tmp; + tmp = pattern_space; + pattern_space = hold_space; + hold_space = tmp; + } } } |