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 const char *file_name = sym_expand_string_value(name); 16 17 for (file = file_list; file; file = file->next) { 18 if (!strcmp(name, file->name)) { 19 free((void *)file_name); 20 return file; 21 } 22 } 23 24 file = malloc(sizeof(*file)); 25 memset(file, 0, sizeof(*file)); 26 file->name = file_name; 27 file->next = file_list; 28 file_list = file; 29 return file; 30 } 31 32 /* write a dependency file as used by kbuild to track dependencies */ 33 int file_write_dep(const char *name) 34 { 35 struct symbol *sym, *env_sym; 36 struct expr *e; 37 struct file *file; 38 FILE *out; 39 40 if (!name) 41 name = ".kconfig.d"; 42 out = fopen("..config.tmp", "w"); 43 if (!out) 44 return 1; 45 fprintf(out, "deps_config := \\\n"); 46 for (file = file_list; file; file = file->next) { 47 if (file->next) 48 fprintf(out, "\t%s \\\n", file->name); 49 else 50 fprintf(out, "\t%s\n", file->name); 51 } 52 fprintf(out, "\n%s: \\\n" 53 "\t$(deps_config)\n\n", conf_get_autoconfig_name()); 54 55 expr_list_for_each_sym(sym_env_list, e, sym) { 56 struct property *prop; 57 const char *value; 58 59 prop = sym_get_env_prop(sym); 60 env_sym = prop_get_symbol(prop); 61 if (!env_sym) 62 continue; 63 value = getenv(env_sym->name); 64 if (!value) 65 value = ""; 66 fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value); 67 fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name()); 68 fprintf(out, "endif\n"); 69 } 70 71 fprintf(out, "\n$(deps_config): ;\n"); 72 fclose(out); 73 rename("..config.tmp", name); 74 return 0; 75 } 76 77 78 /* Allocate initial growable string */ 79 struct gstr str_new(void) 80 { 81 struct gstr gs; 82 gs.s = malloc(sizeof(char) * 64); 83 gs.len = 64; 84 gs.max_width = 0; 85 strcpy(gs.s, "\0"); 86 return gs; 87 } 88 89 /* Allocate and assign growable string */ 90 struct gstr str_assign(const char *s) 91 { 92 struct gstr gs; 93 gs.s = strdup(s); 94 gs.len = strlen(s) + 1; 95 gs.max_width = 0; 96 return gs; 97 } 98 99 /* Free storage for growable string */ 100 void str_free(struct gstr *gs) 101 { 102 if (gs->s) 103 free(gs->s); 104 gs->s = NULL; 105 gs->len = 0; 106 } 107 108 /* Append to growable string */ 109 void str_append(struct gstr *gs, const char *s) 110 { 111 size_t l; 112 if (s) { 113 l = strlen(gs->s) + strlen(s) + 1; 114 if (l > gs->len) { 115 gs->s = realloc(gs->s, l); 116 gs->len = l; 117 } 118 strcat(gs->s, s); 119 } 120 } 121 122 /* Append printf formatted string to growable string */ 123 void str_printf(struct gstr *gs, const char *fmt, ...) 124 { 125 va_list ap; 126 char s[10000]; /* big enough... */ 127 va_start(ap, fmt); 128 vsnprintf(s, sizeof(s), fmt, ap); 129 str_append(gs, s); 130 va_end(ap); 131 } 132 133 /* Retrieve value of growable string */ 134 const char *str_get(struct gstr *gs) 135 { 136 return gs->s; 137 } 138 139