1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
  4 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
  5 */
  6
  7#include <stdarg.h>
  8#include <stdlib.h>
  9#include <string.h>
 
 
 
 
 10#include "lkc.h"
 11
 
 
 
 
 
 
 
 
 12/* file already present in list? If not add it */
 13struct file *file_lookup(const char *name)
 14{
 15	struct file *file;
 
 
 16
 17	for (file = file_list; file; file = file->next) {
 18		if (!strcmp(name, file->name)) {
 19			return file;
 20		}
 21	}
 22
 23	file = xmalloc(sizeof(*file));
 
 24	memset(file, 0, sizeof(*file));
 25	file->name = xstrdup(name);
 26	file->next = file_list;
 27	file_list = file;
 28	return file;
 
 
 
 
 29}
 30
 31/* Allocate initial growable string */
 32struct gstr str_new(void)
 33{
 34	struct gstr gs;
 35	gs.s = xmalloc(sizeof(char) * 64);
 36	gs.len = 64;
 37	gs.max_width = 0;
 38	strcpy(gs.s, "\0");
 39	return gs;
 40}
 41
 42/* Free storage for growable string */
 43void str_free(struct gstr *gs)
 44{
 45	if (gs->s)
 46		free(gs->s);
 47	gs->s = NULL;
 48	gs->len = 0;
 49}
 50
 51/* Append to growable string */
 52void str_append(struct gstr *gs, const char *s)
 53{
 54	size_t l;
 55	if (s) {
 56		l = strlen(gs->s) + strlen(s) + 1;
 57		if (l > gs->len) {
 58			gs->s = xrealloc(gs->s, l);
 59			gs->len = l;
 60		}
 61		strcat(gs->s, s);
 62	}
 63}
 64
 65/* Append printf formatted string to growable string */
 66void str_printf(struct gstr *gs, const char *fmt, ...)
 67{
 68	va_list ap;
 69	char s[10000]; /* big enough... */
 70	va_start(ap, fmt);
 71	vsnprintf(s, sizeof(s), fmt, ap);
 72	str_append(gs, s);
 73	va_end(ap);
 74}
 75
 76/* Retrieve value of growable string */
 77const char *str_get(struct gstr *gs)
 78{
 79	return gs->s;
 80}
 81
 82void *xmalloc(size_t size)
 83{
 84	void *p = malloc(size);
 85	if (p)
 86		return p;
 87	fprintf(stderr, "Out of memory.\n");
 88	exit(1);
 89}
 90
 91void *xcalloc(size_t nmemb, size_t size)
 92{
 93	void *p = calloc(nmemb, size);
 94	if (p)
 95		return p;
 96	fprintf(stderr, "Out of memory.\n");
 97	exit(1);
 98}
 99
100void *xrealloc(void *p, size_t size)
101{
102	p = realloc(p, size);
103	if (p)
104		return p;
105	fprintf(stderr, "Out of memory.\n");
106	exit(1);
107}
108
109char *xstrdup(const char *s)
110{
111	char *p;
112
113	p = strdup(s);
114	if (p)
115		return p;
116	fprintf(stderr, "Out of memory.\n");
117	exit(1);
118}
119
120char *xstrndup(const char *s, size_t n)
121{
122	char *p;
123
124	p = strndup(s, n);
125	if (p)
126		return p;
127	fprintf(stderr, "Out of memory.\n");
128	exit(1);
129}

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
 4 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
 5 */
 6
 7#include <stdarg.h>
 8#include <stdlib.h>
 9#include <string.h>
10
11#include <hash.h>
12#include <hashtable.h>
13#include <xalloc.h>
14#include "lkc.h"
15
16/* hash table of all parsed Kconfig files */
17static HASHTABLE_DEFINE(file_hashtable, 1U << 11);
18
19struct file {
20	struct hlist_node node;
21	char name[];
22};
23
24/* file already present in list? If not add it */
25const char *file_lookup(const char *name)
26{
27	struct file *file;
28	size_t len;
29	int hash = hash_str(name);
30
31	hash_for_each_possible(file_hashtable, file, node, hash)
32		if (!strcmp(name, file->name))
33			return file->name;
 
 
34
35	len = strlen(name);
36	file = xmalloc(sizeof(*file) + len + 1);
37	memset(file, 0, sizeof(*file));
38	memcpy(file->name, name, len);
39	file->name[len] = '\0';
40
41	hash_add(file_hashtable, &file->node, hash);
42
43	str_printf(&autoconf_cmd, "\t%s \\\n", name);
44
45	return file->name;
46}
47
48/* Allocate initial growable string */
49struct gstr str_new(void)
50{
51	struct gstr gs;
52	gs.s = xmalloc(sizeof(char) * 64);
53	gs.len = 64;
54	gs.max_width = 0;
55	strcpy(gs.s, "\0");
56	return gs;
57}
58
59/* Free storage for growable string */
60void str_free(struct gstr *gs)
61{
62	free(gs->s);
 
63	gs->s = NULL;
64	gs->len = 0;
65}
66
67/* Append to growable string */
68void str_append(struct gstr *gs, const char *s)
69{
70	size_t l;
71	if (s) {
72		l = strlen(gs->s) + strlen(s) + 1;
73		if (l > gs->len) {
74			gs->s = xrealloc(gs->s, l);
75			gs->len = l;
76		}
77		strcat(gs->s, s);
78	}
79}
80
81/* Append printf formatted string to growable string */
82void str_printf(struct gstr *gs, const char *fmt, ...)
83{
84	va_list ap;
85	char s[10000]; /* big enough... */
86	va_start(ap, fmt);
87	vsnprintf(s, sizeof(s), fmt, ap);
88	str_append(gs, s);
89	va_end(ap);
90}
91
92/* Retrieve value of growable string */
93char *str_get(const struct gstr *gs)
94{
95	return gs->s;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
96}