diff options
| -rw-r--r-- | editors/sed.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/editors/sed.c b/editors/sed.c index 037d2a8ac..5fe435622 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -55,6 +55,9 @@ #include <stdlib.h> #include "busybox.h" +/* the spec says label must be at least 8 chars, behavious is unspecified if more than 8 chars */ +#define SED_LABEL_LENGTH 8 + /* externs */ extern void xregcomp(regex_t *preg, const char *regex, int cflags); extern int optind; /* in unistd.h */ @@ -103,6 +106,9 @@ typedef struct sed_cmd_s { /* inversion flag */ int invert; /* the '!' after the address */ + /* Branch commands */ + char label[SED_LABEL_LENGTH + 1]; + /* next command in list (sequential list of specified commands) */ struct sed_cmd_s *linear; @@ -399,6 +405,18 @@ static char *parse_cmd_str(sed_cmd_t * const sed_cmd, char *cmdstr) bb_error_msg_and_die("Command only uses one address"); cmdstr += parse_file_cmd(sed_cmd, cmdstr); } + /* handle branch commands */ + else if (strchr(":b", sed_cmd->cmd)) { + int length; + + cmdstr += strspn(cmdstr, " "); + length = strcspn(cmdstr, "; "); + if (length > SED_LABEL_LENGTH) { + length = SED_LABEL_LENGTH; + } + strncpy(sed_cmd->label, cmdstr, length); + cmdstr += length; + } /* if it wasnt a single-letter command that takes no arguments * then it must be an invalid command. */ @@ -677,6 +695,18 @@ static int do_subst_command(const sed_cmd_t *sed_cmd, char **line) return altered; } +static sed_cmd_t *branch_to(const char *label) +{ + sed_cmd_t *sed_cmd; + for(sed_cmd = sed_cmd_head.linear; sed_cmd; sed_cmd = sed_cmd->linear) { + if (strcmp(sed_cmd->label, label) == 0) { + break; + } + } + + /* If no match returns last command */ + return(sed_cmd); +} static void process_file(FILE *file) { @@ -832,6 +862,12 @@ static void process_file(FILE *file) strcat(line, next_line); next_line = bb_get_chomped_line_from_file(file); linenum++; + break; + case 'b': + sed_cmd = branch_to(sed_cmd->label); + break; +// case ':': +// break; } } |