diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/ash.c | 220 |
1 files changed, 110 insertions, 110 deletions
diff --git a/shell/ash.c b/shell/ash.c index c575e10..7acb33e 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -5568,6 +5568,116 @@ cvtnum(arith_t num) return len; } +/* + * Break the argument string into pieces based upon IFS and add the + * strings to the argument list. The regions of the string to be + * searched for IFS characters have been stored by recordregion. + */ +static void +ifsbreakup(char *string, struct arglist *arglist) +{ + struct ifsregion *ifsp; + struct strlist *sp; + char *start; + char *p; + char *q; + const char *ifs, *realifs; + int ifsspc; + int nulonly; + + start = string; + if (ifslastp != NULL) { + ifsspc = 0; + nulonly = 0; + realifs = ifsset() ? ifsval() : defifs; + ifsp = &ifsfirst; + do { + p = string + ifsp->begoff; + nulonly = ifsp->nulonly; + ifs = nulonly ? nullstr : realifs; + ifsspc = 0; + while (p < string + ifsp->endoff) { + q = p; + if ((unsigned char)*p == CTLESC) + p++; + if (!strchr(ifs, *p)) { + p++; + continue; + } + if (!nulonly) + ifsspc = (strchr(defifs, *p) != NULL); + /* Ignore IFS whitespace at start */ + if (q == start && ifsspc) { + p++; + start = p; + continue; + } + *q = '\0'; + sp = stzalloc(sizeof(*sp)); + sp->text = start; + *arglist->lastp = sp; + arglist->lastp = &sp->next; + p++; + if (!nulonly) { + for (;;) { + if (p >= string + ifsp->endoff) { + break; + } + q = p; + if ((unsigned char)*p == CTLESC) + p++; + if (strchr(ifs, *p) == NULL) { + p = q; + break; + } + if (strchr(defifs, *p) == NULL) { + if (ifsspc) { + p++; + ifsspc = 0; + } else { + p = q; + break; + } + } else + p++; + } + } + start = p; + } /* while */ + ifsp = ifsp->next; + } while (ifsp != NULL); + if (nulonly) + goto add; + } + + if (!*start) + return; + + add: + sp = stzalloc(sizeof(*sp)); + sp->text = start; + *arglist->lastp = sp; + arglist->lastp = &sp->next; +} + +static void +ifsfree(void) +{ + struct ifsregion *p; + + INT_OFF; + p = ifsfirst.next; + do { + struct ifsregion *ifsp; + ifsp = p->next; + free(p); + p = ifsp; + } while (p); + ifslastp = NULL; + ifsfirst.next = NULL; + INT_ON; +} + static size_t esclen(const char *start, const char *p) { @@ -6849,116 +6959,6 @@ evalvar(char *p, int flag, struct strlist *var_str_list) } /* - * Break the argument string into pieces based upon IFS and add the - * strings to the argument list. The regions of the string to be - * searched for IFS characters have been stored by recordregion. - */ -static void -ifsbreakup(char *string, struct arglist *arglist) -{ - struct ifsregion *ifsp; - struct strlist *sp; - char *start; - char *p; - char *q; - const char *ifs, *realifs; - int ifsspc; - int nulonly; - - start = string; - if (ifslastp != NULL) { - ifsspc = 0; - nulonly = 0; - realifs = ifsset() ? ifsval() : defifs; - ifsp = &ifsfirst; - do { - p = string + ifsp->begoff; - nulonly = ifsp->nulonly; - ifs = nulonly ? nullstr : realifs; - ifsspc = 0; - while (p < string + ifsp->endoff) { - q = p; - if ((unsigned char)*p == CTLESC) - p++; - if (!strchr(ifs, *p)) { - p++; - continue; - } - if (!nulonly) - ifsspc = (strchr(defifs, *p) != NULL); - /* Ignore IFS whitespace at start */ - if (q == start && ifsspc) { - p++; - start = p; - continue; - } - *q = '\0'; - sp = stzalloc(sizeof(*sp)); - sp->text = start; - *arglist->lastp = sp; - arglist->lastp = &sp->next; - p++; - if (!nulonly) { - for (;;) { - if (p >= string + ifsp->endoff) { - break; - } - q = p; - if ((unsigned char)*p == CTLESC) - p++; - if (strchr(ifs, *p) == NULL) { - p = q; - break; - } - if (strchr(defifs, *p) == NULL) { - if (ifsspc) { - p++; - ifsspc = 0; - } else { - p = q; - break; - } - } else - p++; - } - } - start = p; - } /* while */ - ifsp = ifsp->next; - } while (ifsp != NULL); - if (nulonly) - goto add; - } - - if (!*start) - return; - - add: - sp = stzalloc(sizeof(*sp)); - sp->text = start; - *arglist->lastp = sp; - arglist->lastp = &sp->next; -} - -static void -ifsfree(void) -{ - struct ifsregion *p; - - INT_OFF; - p = ifsfirst.next; - do { - struct ifsregion *ifsp; - ifsp = p->next; - free(p); - p = ifsp; - } while (p); - ifslastp = NULL; - ifsfirst.next = NULL; - INT_ON; -} - -/* * Add a file name to the list. */ static void |