diff options
author | Glenn L McGrath <bug1@ihug.co.nz> | 2003-03-09 14:06:38 +0300 |
---|---|---|
committer | Glenn L McGrath <bug1@ihug.co.nz> | 2003-03-09 14:06:38 +0300 |
commit | 4c6523a90b2a0b8704a25208dedf0b6a5ee7b287 (patch) | |
tree | c8681a9bb35bc5cee92695944204e0806429d7dc | |
parent | e7a8bc949baa34097e42ae24f8d89b97be4d55c7 (diff) |
alloc array for commands, use string ptr in parse_command_string()
-rw-r--r-- | editors/sed.c | 73 |
1 files changed, 36 insertions, 37 deletions
diff --git a/editors/sed.c b/editors/sed.c index 6ee4693cb..96e0dd88b 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -104,7 +104,7 @@ typedef struct sed_cmd_s { } sed_cmd_t; /* globals */ -static sed_cmd_t *sed_cmds = NULL; /* growable arrary holding a sequence of sed cmds */ +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? */ @@ -120,19 +120,19 @@ static void destroy_cmd_strs(void) /* destroy all the elements in the array */ while (--ncmds >= 0) { - if (sed_cmds[ncmds].beg_match) { - regfree(sed_cmds[ncmds].beg_match); - free(sed_cmds[ncmds].beg_match); + if (sed_cmds[ncmds]->beg_match) { + regfree(sed_cmds[ncmds]->beg_match); + free(sed_cmds[ncmds]->beg_match); } - if (sed_cmds[ncmds].end_match) { - regfree(sed_cmds[ncmds].end_match); - free(sed_cmds[ncmds].end_match); + if (sed_cmds[ncmds]->end_match) { + regfree(sed_cmds[ncmds]->end_match); + free(sed_cmds[ncmds]->end_match); } - if (sed_cmds[ncmds].sub_match) { - regfree(sed_cmds[ncmds].sub_match); - free(sed_cmds[ncmds].sub_match); + if (sed_cmds[ncmds]->sub_match) { + regfree(sed_cmds[ncmds]->sub_match); + free(sed_cmds[ncmds]->sub_match); } - free(sed_cmds[ncmds].replace); + free(sed_cmds[ncmds]->replace); } /* destroy the array */ @@ -382,8 +382,6 @@ static int parse_file_cmd(sed_cmd_t *sed_cmd, const char *filecmdstr) static char *parse_cmd_str(sed_cmd_t * const sed_cmd, char *cmdstr) { - int idx = 0; - /* parse the command * format is: [addr][,addr]cmd * |----||-----||-| @@ -391,29 +389,29 @@ static char *parse_cmd_str(sed_cmd_t * const sed_cmd, char *cmdstr) */ /* first part (if present) is an address: either a '$', a number or a /regex/ */ - idx = get_address(&sed_cmd->delimiter, cmdstr, &sed_cmd->beg_line, &sed_cmd->beg_match); + cmdstr += get_address(&sed_cmd->delimiter, cmdstr, &sed_cmd->beg_line, &sed_cmd->beg_match); /* second part (if present) will begin with a comma */ - if (cmdstr[idx] == ',') { + if (*cmdstr == ',') { int tmp_idx; - idx++; - tmp_idx = get_address(&sed_cmd->delimiter, &cmdstr[idx], &sed_cmd->end_line, &sed_cmd->end_match); + cmdstr++; + tmp_idx = get_address(&sed_cmd->delimiter, cmdstr, &sed_cmd->end_line, &sed_cmd->end_match); if (tmp_idx == 0) { error_msg_and_die("get_address: no address found in string\n" "\t(you probably didn't check the string you passed me)"); } - idx += tmp_idx; + cmdstr += tmp_idx; } /* skip whitespace before the command */ - while (isspace(cmdstr[idx])) - idx++; + while (isspace(*cmdstr)) + cmdstr++; /* there my be the inversion flag between part2 and part3 */ sed_cmd->invert = 0; - if (cmdstr[idx] == '!') { + if (*cmdstr == '!') { sed_cmd->invert = 1; - idx++; + cmdstr++; #ifdef SED_FEATURE_STRICT_CHECKING /* According to the spec @@ -421,48 +419,49 @@ static char *parse_cmd_str(sed_cmd_t * const sed_cmd, char *cmdstr) * and conforming applications shall not follow a '!' character * with <blank>s. */ - if (isblank(cmdstr[idx]) { + if (isblank(*cmdstr) { error_msg_and_die("blank follows '!'"); } #else /* skip whitespace before the command */ - while (isspace(cmdstr[idx])) - idx++; + while (isspace(*cmdstr)) + cmdstr++; #endif } /* last part (mandatory) will be a command */ - if (cmdstr[idx] == '\0') + if (*cmdstr == '\0') error_msg_and_die("missing command"); - sed_cmd->cmd = cmdstr[idx]; + + sed_cmd->cmd = *cmdstr; /* if it was a single-letter command that takes no arguments (such as 'p' * or 'd') all we need to do is increment the index past that command */ if (strchr("pd=", sed_cmd->cmd)) { - idx++; + cmdstr++; } /* handle (s)ubstitution command */ else if (sed_cmd->cmd == 's') { - idx += parse_subst_cmd(sed_cmd, &cmdstr[idx]); + cmdstr += parse_subst_cmd(sed_cmd, cmdstr); } /* handle edit cmds: (a)ppend, (i)nsert, and (c)hange */ else if (strchr("aic", sed_cmd->cmd)) { if ((sed_cmd->end_line || sed_cmd->end_match) && sed_cmd->cmd != 'c') error_msg_and_die("only a beginning address can be specified for edit commands"); - idx += parse_edit_cmd(sed_cmd, &cmdstr[idx]); + cmdstr += parse_edit_cmd(sed_cmd, cmdstr); } /* handle file cmds: (r)ead */ else if (sed_cmd->cmd == 'r') { if (sed_cmd->end_line || sed_cmd->end_match) error_msg_and_die("Command only uses one address"); - idx += parse_file_cmd(sed_cmd, &cmdstr[idx]); + cmdstr += parse_file_cmd(sed_cmd, cmdstr); } else { error_msg_and_die("Unsupported command %c", sed_cmd->cmd); } /* give back whatever's left over */ - return (char *)&cmdstr[idx]; + return(cmdstr); } static void add_cmd_str(const char * const cmdstr) @@ -483,11 +482,11 @@ static void add_cmd_str(const char * const cmdstr) continue; } /* grow the array */ - sed_cmds = xrealloc(sed_cmds, sizeof(sed_cmd_t) * (++ncmds)); + sed_cmds = xrealloc(sed_cmds, sizeof(sed_cmd_t *) * (++ncmds)); /* zero new element */ - memset(&sed_cmds[ncmds-1], 0, sizeof(sed_cmd_t)); + sed_cmds[ncmds-1] = xcalloc(1, sizeof(sed_cmd_t)); /* load command string into new array element, get remainder */ - mystr = parse_cmd_str(&sed_cmds[ncmds-1], mystr); + mystr = parse_cmd_str(sed_cmds[ncmds-1], mystr); } while (mystr && strlen(mystr)); } @@ -676,7 +675,7 @@ static void process_file(FILE *file) /* for every line, go through all the commands */ for (i = 0; i < ncmds; i++) { - sed_cmd_t *sed_cmd = &sed_cmds[i]; + sed_cmd_t *sed_cmd = sed_cmds[i]; int deleted = 0; /* @@ -745,7 +744,7 @@ 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 && (i+1 >= ncmds || sed_cmds[i+1]->cmd != 's')) puts(line); break; |