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, 48 "\n" 49 ".config include/autoconf.h: $(deps_config)\n" 50 "\n" 51 "include/autoconf.h: .config\n" /* bbox */ 52 "\n" 53 "$(deps_config):\n"); 54 fclose(out); 55 rename("..config.tmp", name); 56 return 0; 57} 58 59 60/* Allocate initial growable string */ 61struct gstr str_new(void) 62{ 63 struct gstr gs; 64 gs.s = malloc(sizeof(char) * 64); 65 gs.len = 16; 66 strcpy(gs.s, "\0"); 67 return gs; 68} 69 70/* Allocate and assign growable string */ 71struct gstr str_assign(const char *s) 72{ 73 struct gstr gs; 74 gs.s = strdup(s); 75 gs.len = strlen(s) + 1; 76 return gs; 77} 78 79/* Free storage for growable string */ 80void str_free(struct gstr *gs) 81{ 82 if (gs->s) 83 free(gs->s); 84 gs->s = NULL; 85 gs->len = 0; 86} 87 88/* Append to growable string */ 89void str_append(struct gstr *gs, const char *s) 90{ 91 size_t l = strlen(gs->s) + strlen(s) + 1; 92 if (l > gs->len) { 93 gs->s = realloc(gs->s, l); 94 gs->len = l; 95 } 96 strcat(gs->s, s); 97} 98 99/* Append printf formatted string to growable string */ 100void str_printf(struct gstr *gs, const char *fmt, ...) 101{ 102 va_list ap; 103 char s[10000]; /* big enough... */ 104 va_start(ap, fmt); 105 vsnprintf(s, sizeof(s), fmt, ap); 106 str_append(gs, s); 107 va_end(ap); 108} 109 110/* Retrieve value of growable string */ 111const char *str_get(struct gstr *gs) 112{ 113 return gs->s; 114} 115 116