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59 lines
948 B
C
59 lines
948 B
C
/*
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* util.h - Utility functions
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*
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* Copyright 2012 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <string.h>
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#include <glib.h>
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#include "util.h"
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static GTree *tree = NULL;
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static gint comp(gconstpointer a, gconstpointer b)
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{
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return strcmp(a, b);
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}
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const char *unique(const char *s)
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{
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char *u;
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if (!tree)
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tree = g_tree_new(comp);
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u = g_tree_lookup(tree, s);
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if (!u) {
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u = strdup(s);
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g_tree_insert(tree, u, u);
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}
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return u;
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}
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const char *unique_n(const char *s, int n)
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{
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char *tmp, *u;
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if (!tree)
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tree = g_tree_new(comp);
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tmp = stralloc_n(s, n);
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u = g_tree_lookup(tree, tmp);
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if (u) {
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free(tmp);
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return u;
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} else {
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g_tree_insert(tree, tmp, tmp);
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return tmp;
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}
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}
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