diff options
| -rw-r--r-- | editors/sed.c | 53 |
1 files changed, 23 insertions, 30 deletions
diff --git a/editors/sed.c b/editors/sed.c index b17c8c794..e412cf919 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -442,36 +442,29 @@ static char *parse_cmd_str(struct sed_cmd * const sed_cmd, const char *const cmd error_msg_and_die("missing command"); sed_cmd->cmd = cmdstr[idx]; - switch (sed_cmd->cmd) { - /* 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 */ - case 'p': - case 'd': - case '=': - idx++; - break; - /* handle (s)ubstitution command */ - case 's': - idx += parse_subst_cmd(sed_cmd, &cmdstr[idx]); - break; - /* handle edit cmds: (a)ppend, (i)nsert, and (c)hange */ - case 'a': - case 'i': - case 'c': - 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]); - break; - /* handle file cmds: (r)ead */ - case '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]); - break; - default: - error_msg_and_die("Unsupported command %c", sed_cmd->cmd); + /* 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++; + } + /* handle (s)ubstitution command */ + else if (sed_cmd->cmd == 's') { + idx += parse_subst_cmd(sed_cmd, &cmdstr[idx]); + } + /* 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]); + } + /* 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]); + } + else { + error_msg_and_die("Unsupported command %c", sed_cmd->cmd); } /* give back whatever's left over */ |