diff options
Diffstat (limited to 'editors')
| -rw-r--r-- | editors/sed.c | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/editors/sed.c b/editors/sed.c index 2ff0284..85eb9f6 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -101,14 +101,17 @@ typedef struct sed_cmd_s { char cmd; /* p,d,s (add more at your leisure :-) */ /* inversion flag */ - int invert; /* the '!' after the address */ + int invert; /* the '!' after the address */ + + /* next command in list (sequential list of specified commands) */ + struct sed_cmd_s *linear; + } sed_cmd_t; /* globals */ -static sed_cmd_t **sed_cmds = NULL; /* growable arrary holding a sequence of sed cmds */ -static int ncmds = 0; /* number of sed commands */ - -/*static char *cur_file = NULL;*/ /* file currently being processed XXX: do I need this? */ +/* linked list of sed commands */ +static sed_cmd_t sed_cmd_head; +static sed_cmd_t *sed_cmd_tail = &sed_cmd_head; const char * const semicolon_whitespace = "; \n\r\t\v\0"; @@ -485,19 +488,26 @@ static char *add_cmd(sed_cmd_t *sed_cmd, char *cmdstr) if (sed_cmd->cmd == '{') { do { + sed_cmd_t *sed_cmd_new; char *end_ptr = strpbrk(cmdstr, ";}"); + *end_ptr = '\0'; - add_cmd(sed_cmd, cmdstr); + sed_cmd_new = xcalloc(1, sizeof(sed_cmd_t)); + sed_cmd_new->beg_match = sed_cmd->beg_match; + sed_cmd_new->end_match = sed_cmd->end_match; + sed_cmd_new->beg_line = sed_cmd->beg_line; + sed_cmd_new->end_line = sed_cmd->end_line; + sed_cmd_new->invert = sed_cmd->invert; + + add_cmd(sed_cmd_new, cmdstr); cmdstr = end_ptr + 1; } while (*cmdstr != '\0'); } else { - cmdstr = parse_cmd_str(sed_cmd, cmdstr); /* Add the command to the command array */ - sed_cmds = xrealloc(sed_cmds, sizeof(sed_cmd_t) * (++ncmds)); - sed_cmds[ncmds-1] = xmalloc(sizeof(sed_cmd_t)); - memcpy(sed_cmds[ncmds-1], sed_cmd, sizeof(sed_cmd_t)); + sed_cmd_tail->linear = sed_cmd; + sed_cmd_tail = sed_cmd_tail->linear; } return(cmdstr); } @@ -677,7 +687,6 @@ static void process_file(FILE *file) static int linenum = 0; /* GNU sed does not restart counting lines at EOF */ unsigned int still_in_range = 0; int altered; - int i; line = bb_get_chomped_line_from_file(file); if (line == NULL) { @@ -687,6 +696,7 @@ static void process_file(FILE *file) /* go through every line in the file */ do { char *next_line; + sed_cmd_t *sed_cmd; /* Read one line in advance so we can act on the last line, the '$' address */ next_line = bb_get_chomped_line_from_file(file); @@ -695,8 +705,7 @@ static void process_file(FILE *file) altered = 0; /* for every line, go through all the commands */ - for (i = 0; i < ncmds; i++) { - sed_cmd_t *sed_cmd = sed_cmds[i]; + for (sed_cmd = sed_cmd_head.linear; sed_cmd; sed_cmd = sed_cmd->linear) { int deleted = 0; /* @@ -770,7 +779,7 @@ static void process_file(FILE *file) * (this is quite possibly the second printing) */ if (sed_cmd->sub_p) altered |= do_subst_command(sed_cmd, &line); - if (altered && (i+1 >= ncmds || sed_cmds[i+1]->cmd != 's')) + if (altered && ((sed_cmd->linear == NULL) || (sed_cmd->linear->cmd != 's'))) puts(line); break; @@ -900,7 +909,7 @@ extern int sed_main(int argc, char **argv) /* if we didn't get a pattern from a -e and no command file was specified, * argv[optind] should be the pattern. no pattern, no worky */ - if (ncmds == 0) { + if (sed_cmd_head.linear == NULL) { if (argv[optind] == NULL) bb_show_usage(); else { |