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 <string.h> 9 #include "lkc.h" 10 11 /* file already present in list? If not add it */ 12 struct file *file_lookup(const char *name) 13 { 14 struct file *file; 15 16 for (file = file_list; file; file = file->next) { 17 if (!strcmp(name, file->name)) 18 return file; 19 } 20 21 file = malloc(sizeof(*file)); 22 memset(file, 0, sizeof(*file)); 23 file->name = strdup(name); 24 file->next = file_list; 25 file_list = file; 26 return file; 27 } 28 29 /* write a dependency file as used by kbuild to track dependencies */ 30 int file_write_dep(const char *name) 31 { 32 struct file *file; 33 FILE *out; 34 35 if (!name) 36 name = ".config.cmd"; 37 out = fopen("..config.tmp", "w"); 38 if (!out) 39 return 1; 40 fprintf(out, "deps_config := \\\n"); 41 for (file = file_list; file; file = file->next) { 42 if (file->next) 43 fprintf(out, "\t%s \\\n", file->name); 44 else 45 fprintf(out, "\t%s\n", file->name); 46 } 47 fprintf(out, "\n.config include/linux/autoconf.h: $(deps_config)\n\n$(deps_config):\n"); 48 fclose(out); 49 rename("..config.tmp", name); 50 return 0; 51 } 52 53 54 /* Allocate initial growable sting */ 55 struct gstr str_new(void) 56 { 57 struct gstr gs; 58 gs.s = malloc(sizeof(char) * 64); 59 gs.len = 16; 60 strcpy(gs.s, "\0"); 61 return gs; 62 } 63 64 /* Allocate and assign growable string */ 65 struct gstr str_assign(const char *s) 66 { 67 struct gstr gs; 68 gs.s = strdup(s); 69 gs.len = strlen(s) + 1; 70 return gs; 71 } 72 73 /* Free storage for growable string */ 74 void str_free(struct gstr *gs) 75 { 76 if (gs->s) 77 free(gs->s); 78 gs->s = NULL; 79 gs->len = 0; 80 } 81 82 /* Append to growable string */ 83 void str_append(struct gstr *gs, const char *s) 84 { 85 size_t l = strlen(gs->s) + strlen(s) + 1; 86 if (l > gs->len) { 87 gs->s = realloc(gs->s, l); 88 gs->len = l; 89 } 90 strcat(gs->s, s); 91 } 92 93 /* Append printf formatted string to growable string */ 94 void str_printf(struct gstr *gs, const char *fmt, ...) 95 { 96 va_list ap; 97 char s[10000]; /* big enough... */ 98 va_start(ap, fmt); 99 vsnprintf(s, sizeof(s), fmt, ap); 100 str_append(gs, s); 101 va_end(ap); 102 } 103 104 /* Retreive value of growable string */ 105 const char *str_get(struct gstr *gs) 106 { 107 return gs->s; 108 } 109 110