/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2002,2003 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
#include <curses.priv.h>
-MODULE_ID("$Id: trace_buf.c,v 1.7 1999/02/27 19:50:58 tom Exp $")
+MODULE_ID("$Id: trace_buf.c,v 1.12 2003/03/15 21:21:36 tom Exp $")
typedef struct {
- char *text;
- size_t size;
+ char *text;
+ size_t size;
} LIST;
-char * _nc_trace_buf(int bufnum, size_t want)
+static char *
+_nc_trace_alloc(int bufnum, size_t want)
{
- static LIST *list;
- static size_t have;
+ char *result = 0;
+ static LIST *list;
+ static size_t have;
-#if NO_LEAKS
- if (bufnum < 0) {
- if (have) {
- while (have--) {
- free(list[have].text);
- }
- free(list);
- }
- return 0;
+ if (bufnum >= 0) {
+ if ((size_t) (bufnum + 1) > have) {
+ size_t need = (bufnum + 1) * 2;
+ if ((list = typeRealloc(LIST, need, list)) == 0)
+ return (0);
+ while (need > have)
+ list[have++].text = 0;
}
-#endif
- if ((size_t)(bufnum+1) > have) {
- size_t need = (bufnum + 1) * 2;
- if ((list = typeRealloc(LIST, need, list)) == 0)
- return(0);
- while (need > have)
- list[have++].text = 0;
+ if (list[bufnum].text == 0
+ || want > list[bufnum].size) {
+ if ((list[bufnum].text = typeRealloc(char, want, list[bufnum].text))
+ != 0)
+ list[bufnum].size = want;
}
- if (list[bufnum].text == 0
- || want > list[bufnum].size)
- {
- if ((list[bufnum].text = typeRealloc(char, want, list[bufnum].text)) != 0)
- list[bufnum].size = want;
+ result = list[bufnum].text;
+ }
+#if NO_LEAKS
+ else {
+ if (have) {
+ while (have--) {
+ if (list[have].text != 0)
+ free(list[have].text);
+ }
+ free(list);
}
+ }
+#endif
+ return result;
+}
+
+/*
+ * (re)Allocate a buffer big enough for the caller's wants.
+ */
+NCURSES_EXPORT(char *)
+_nc_trace_buf(int bufnum, size_t want)
+{
+ char *result = _nc_trace_alloc(bufnum, want);
+ if (result != 0)
+ *result = '\0';
+ return result;
+}
+
+/*
+ * Append a new string to an existing buffer.
+ */
+NCURSES_EXPORT(char *)
+_nc_trace_bufcat(int bufnum, const char *value)
+{
+ char *buffer = _nc_trace_alloc(bufnum, 0);
+ size_t have = strlen(buffer);
+
+ buffer = _nc_trace_alloc(bufnum, 1 + have + strlen(value));
+ (void) strcpy(buffer + have, value);
- if (list[bufnum].text != 0)
- *(list[bufnum].text) = '\0';
- return list[bufnum].text;
+ return buffer;
}