-
/*
- * brkstring.c -- (destructively) split a string into
- * -- an array of substrings
- *
- * This code is Copyright (c) 2002, by the authors of nmh. See the
- * COPYRIGHT file in the root directory of the nmh distribution for
- * complete copyright information.
- */
+** brkstring.c -- (destructively) split a string into
+** -- an array of substrings
+**
+** This code is Copyright (c) 2002, by the authors of nmh. See the
+** COPYRIGHT file in the root directory of the nmh distribution for
+** complete copyright information.
+*/
#include <h/mh.h>
#include <h/utils.h>
/* allocate this number of pointers at a time */
#define NUMBROKEN 256
-static char **broken = NULL; /* array of substring start addresses */
-static int len = 0; /* current size of "broken" */
-
-/*
- * static prototypes
- */
-static int brkany (char, char *);
+static char **broken = NULL; /* array of substring start addresses */
+static int len = 0; /* current size of "broken" */
+/*
+** returns pointer to static memory
+*/
char **
-brkstring (char *str, char *brksep, char *brkterm)
+brkstring(char *str, char *brksep, char *brkterm)
{
- int i;
- char c, *s;
-
- /* allocate initial space for pointers on first call */
- if (!broken) {
- len = NUMBROKEN;
- broken = (char **) mh_xmalloc ((size_t) (len * sizeof(*broken)));
- }
+ int i;
+ char c, *s;
- /*
- * scan string, replacing separators with zeroes
- * and enter start addresses in "broken".
- */
- s = str;
-
- for (i = 0;; i++) {
-
- /* enlarge pointer array, if necessary */
- if (i >= len) {
- len += NUMBROKEN;
- broken = mh_xrealloc (broken, (size_t) (len * sizeof(*broken)));
+ /* allocate initial space for pointers on first call */
+ if (!broken) {
+ len = NUMBROKEN;
+ broken = (char **)mh_xmalloc((size_t)(len * sizeof(*broken)));
}
- while (brkany (c = *s, brksep))
- *s++ = '\0';
-
/*
- * we are either at the end of the string, or the
- * terminator found has been found, so finish up.
- */
- if (!c || brkany (c, brkterm)) {
- *s = '\0';
- broken[i] = NULL;
- return broken;
+ ** scan string, replacing separators with zeroes
+ ** and enter start addresses in "broken".
+ */
+ s = str;
+ for (i = 0;; i++) {
+ /* enlarge pointer array, if necessary */
+ if (i >= len) {
+ len += NUMBROKEN;
+ broken = mh_xrealloc(broken,
+ (size_t)(len * sizeof(*broken)));
+ }
+
+ /* handle separators */
+ while ((c=*s) && brksep && strchr(brksep, c)) {
+ *s++ = '\0';
+ }
+
+ /*
+ ** we are either at the end of the string, or the
+ ** terminator found has been found, so finish up.
+ */
+ if (!c || (brkterm && strchr(brkterm, c))) {
+ *s = '\0';
+ broken[i] = NULL;
+ return broken;
+ }
+
+ /* set next start addr and walk over word */
+ broken[i] = s;
+ while ((c = *++s)) {
+ if (brksep && strchr(brksep, c)) {
+ break;
+ }
+ if (brkterm && strchr(brkterm, c)) {
+ break;
+ }
+ }
}
-
- /* set next start addr */
- broken[i] = s;
-
- while ((c = *++s) && !brkany (c, brksep) && !brkany (c, brkterm))
- ; /* empty body */
- }
-
- return broken; /* NOT REACHED */
-}
-
-
-/*
- * If the character is in the string,
- * return 1, else return 0.
- */
-
-static int
-brkany (char c, char *str)
-{
- char *s;
-
- if (str) {
- for (s = str; *s; s++)
- if (c == *s)
- return 1;
- }
- return 0;
+ adios("brkstring()", "reached unreachable point");
}