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 */
file_lookup(const char * name)13 struct 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 */
str_new(void)32 struct 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 */
str_free(struct gstr * gs)43 void 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 */
str_append(struct gstr * gs,const char * s)52 void 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 */
str_printf(struct gstr * gs,const char * fmt,...)66 void 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 */
str_get(struct gstr * gs)77 char *str_get(struct gstr *gs)
78 {
79 return gs->s;
80 }
81
xmalloc(size_t size)82 void *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
xcalloc(size_t nmemb,size_t size)91 void *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
xrealloc(void * p,size_t size)100 void *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
xstrdup(const char * s)109 char *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
xstrndup(const char * s,size_t n)120 char *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 }
130
