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89 lines
1.5 KiB
C
89 lines
1.5 KiB
C
/*
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* addstr.c
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*
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* By Ross Ridge
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* Public Domain
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* 92/02/01 07:34:01
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*
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*/
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#include "defs.h"
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#include <term.h>
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#include <ctype.h>
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#ifdef USE_SCCS_IDS
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static char const SCCSid[] = "@(#) mytinfo addstr.c 3.2 92/02/01 public domain, By Ross Ridge";
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#endif
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/*
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* I think this routine could be improved, as it is now it searches a
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* linked list of strbufs for one that has enough room left for the
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* string. The only thing else I can think of doing would be to
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* expand a buffer by realloc and then fix the string pointers if it
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* moves.
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*/
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static struct strbuf *strbuf = NULL;
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struct strbuf *
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_endstr() {
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register struct strbuf *p;
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p = strbuf;
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strbuf = NULL;
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return p;
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}
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char *
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_addstr(s)
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register char *s; {
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register struct strbuf *p;
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register int l;
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if (s == NULL) {
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strbuf = NULL;
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return NULL;
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}
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if (strbuf == NULL) {
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strbuf = (struct strbuf *) malloc(sizeof(struct strbuf));
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if (strbuf == NULL)
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return NULL;
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strbuf->len = 0;
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strbuf->next = NULL;
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}
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l = strlen(s) + 1;
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if (l > MAX_CHUNK)
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return NULL;
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p = strbuf;
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while (l + p->len > MAX_CHUNK) {
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if (p->next == NULL) {
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p->next = (struct strbuf *)
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malloc(sizeof(struct strbuf));
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p = p->next;
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if (p == NULL)
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return NULL;
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p->len = 0;
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p->next = NULL;
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break;
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}
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p = p->next;
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}
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s = strcpy(p->buf + p->len, s);
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p->len += l;
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return s;
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}
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void
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_del_strs(p)
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TERMINAL *p; {
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struct strbuf *q;
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q = p->strbuf;
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while(q != NULL) {
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p->strbuf = q->next;
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free((anyptr) q);
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q = p->strbuf;
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}
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}
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