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	free(gs->s);
 46	gs->s = NULL;
 47	gs->len = 0;
 48}
 49
 50/* Append to growable string */
 51void str_append(struct gstr *gs, const char *s)
 52{
 53	size_t l;
 54	if (s) {
 55		l = strlen(gs->s) + strlen(s) + 1;
 56		if (l > gs->len) {
 57			gs->s = xrealloc(gs->s, l);
 58			gs->len = l;
 59		}
 60		strcat(gs->s, s);
 61	}
 62}
 63
 64/* Append printf formatted string to growable string */
 65void str_printf(struct gstr *gs, const char *fmt, ...)
 66{
 67	va_list ap;
 68	char s[10000]; /* big enough... */
 69	va_start(ap, fmt);
 70	vsnprintf(s, sizeof(s), fmt, ap);
 71	str_append(gs, s);
 72	va_end(ap);
 73}
 74
 75/* Retrieve value of growable string */
 76char *str_get(struct gstr *gs)
 77{
 78	return gs->s;
 79}
 80
 81void *xmalloc(size_t size)
 82{
 83	void *p = malloc(size);
 84	if (p)
 85		return p;
 86	fprintf(stderr, "Out of memory.\n");
 87	exit(1);
 88}
 89
 90void *xcalloc(size_t nmemb, size_t size)
 91{
 92	void *p = calloc(nmemb, size);
 93	if (p)
 94		return p;
 95	fprintf(stderr, "Out of memory.\n");
 96	exit(1);
 97}
 98
 99void *xrealloc(void *p, size_t size)
100{
101	p = realloc(p, size);
102	if (p)
103		return p;
104	fprintf(stderr, "Out of memory.\n");
105	exit(1);
106}
107
108char *xstrdup(const char *s)
109{
110	char *p;
111
112	p = strdup(s);
113	if (p)
114		return p;
115	fprintf(stderr, "Out of memory.\n");
116	exit(1);
117}
118
119char *xstrndup(const char *s, size_t n)
120{
121	char *p;
122
123	p = strndup(s, n);
124	if (p)
125		return p;
126	fprintf(stderr, "Out of memory.\n");
127	exit(1);
128}

 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}