1 /*
2 * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
3 * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
4 *
5 * Released under the terms of the GNU GPL v2.0.
6 */
7
8 #include <stdarg.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include "lkc.h"
12
13 /* file already present in list? If not add it */
file_lookup(const char * name)14 struct file *file_lookup(const char *name)
15 {
16 struct file *file;
17
18 for (file = file_list; file; file = file->next) {
19 if (!strcmp(name, file->name)) {
20 return file;
21 }
22 }
23
24 file = xmalloc(sizeof(*file));
25 memset(file, 0, sizeof(*file));
26 file->name = xstrdup(name);
27 file->next = file_list;
28 file_list = file;
29 return file;
30 }
31
32 /* Allocate initial growable string */
str_new(void)33 struct gstr str_new(void)
34 {
35 struct gstr gs;
36 gs.s = xmalloc(sizeof(char) * 64);
37 gs.len = 64;
38 gs.max_width = 0;
39 strcpy(gs.s, "\0");
40 return gs;
41 }
42
43 /* Free storage for growable string */
str_free(struct gstr * gs)44 void str_free(struct gstr *gs)
45 {
46 if (gs->s)
47 free(gs->s);
48 gs->s = NULL;
49 gs->len = 0;
50 }
51
52 /* Append to growable string */
str_append(struct gstr * gs,const char * s)53 void str_append(struct gstr *gs, const char *s)
54 {
55 size_t l;
56 if (s) {
57 l = strlen(gs->s) + strlen(s) + 1;
58 if (l > gs->len) {
59 gs->s = xrealloc(gs->s, l);
60 gs->len = l;
61 }
62 strcat(gs->s, s);
63 }
64 }
65
66 /* Append printf formatted string to growable string */
str_printf(struct gstr * gs,const char * fmt,...)67 void str_printf(struct gstr *gs, const char *fmt, ...)
68 {
69 va_list ap;
70 char s[10000]; /* big enough... */
71 va_start(ap, fmt);
72 vsnprintf(s, sizeof(s), fmt, ap);
73 str_append(gs, s);
74 va_end(ap);
75 }
76
77 /* Retrieve value of growable string */
str_get(struct gstr * gs)78 const char *str_get(struct gstr *gs)
79 {
80 return gs->s;
81 }
82
xmalloc(size_t size)83 void *xmalloc(size_t size)
84 {
85 void *p = malloc(size);
86 if (p)
87 return p;
88 fprintf(stderr, "Out of memory.\n");
89 exit(1);
90 }
91
xcalloc(size_t nmemb,size_t size)92 void *xcalloc(size_t nmemb, size_t size)
93 {
94 void *p = calloc(nmemb, size);
95 if (p)
96 return p;
97 fprintf(stderr, "Out of memory.\n");
98 exit(1);
99 }
100
xrealloc(void * p,size_t size)101 void *xrealloc(void *p, size_t size)
102 {
103 p = realloc(p, size);
104 if (p)
105 return p;
106 fprintf(stderr, "Out of memory.\n");
107 exit(1);
108 }
109
xstrdup(const char * s)110 char *xstrdup(const char *s)
111 {
112 char *p;
113
114 p = strdup(s);
115 if (p)
116 return p;
117 fprintf(stderr, "Out of memory.\n");
118 exit(1);
119 }
120
xstrndup(const char * s,size_t n)121 char *xstrndup(const char *s, size_t n)
122 {
123 char *p;
124
125 p = strndup(s, n);
126 if (p)
127 return p;
128 fprintf(stderr, "Out of memory.\n");
129 exit(1);
130 }
131