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 */ 12struct 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 */ 30int file_write_dep(const char *name) 31{ 32 struct file *file; 33 FILE *out; 34 35 if (!name) 36 name = ".kconfig.d"; 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, "\ninclude/config/auto.conf: \\\n" 48 "\t$(deps_config)\n\n" 49 "$(deps_config): ;\n"); 50 fclose(out); 51 rename("..config.tmp", name); 52 return 0; 53} 54 55 56/* Allocate initial growable sting */ 57struct gstr str_new(void) 58{ 59 struct gstr gs; 60 gs.s = malloc(sizeof(char) * 64); 61 gs.len = 16; 62 strcpy(gs.s, "\0"); 63 return gs; 64} 65 66/* Allocate and assign growable string */ 67struct gstr str_assign(const char *s) 68{ 69 struct gstr gs; 70 gs.s = strdup(s); 71 gs.len = strlen(s) + 1; 72 return gs; 73} 74 75/* Free storage for growable string */ 76void str_free(struct gstr *gs) 77{ 78 if (gs->s) 79 free(gs->s); 80 gs->s = NULL; 81 gs->len = 0; 82} 83 84/* Append to growable string */ 85void str_append(struct gstr *gs, const char *s) 86{ 87 size_t l = strlen(gs->s) + strlen(s) + 1; 88 if (l > gs->len) { 89 gs->s = realloc(gs->s, l); 90 gs->len = l; 91 } 92 strcat(gs->s, s); 93} 94 95/* Append printf formatted string to growable string */ 96void str_printf(struct gstr *gs, const char *fmt, ...) 97{ 98 va_list ap; 99 char s[10000]; /* big enough... */ 100 va_start(ap, fmt); 101 vsnprintf(s, sizeof(s), fmt, ap); 102 str_append(gs, s); 103 va_end(ap); 104} 105 106/* Retrieve value of growable string */ 107const char *str_get(struct gstr *gs) 108{ 109 return gs->s; 110} 111