crosstool-ng: kconfig/util.c@b286c7993be5

     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  */

     8 #include <string.h>

     9 #include "lkc.h"

    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);

    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 	}

    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 }

    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;

    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());

    55 	expr_list_for_each_sym(sym_env_list, e, sym) {

    56 		struct property *prop;

    57 		const char *value;

    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 	}

    71 	fprintf(out, "\n$(deps_config): ;\n");

    72 	fclose(out);

    73 	rename("..config.tmp", name);

    74 	return 0;

    75 }

    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 }

    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 }

    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 }

   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 }

   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 }

   133 /* Retrieve value of growable string */

   134 const char *str_get(struct gstr *gs)

   135 {

   136 	return gs->s;

   137 }

author	"Yann E. MORIN" <yann.morin.1998@free.fr>
	Thu Dec 27 12:45:22 2012 +0100 (2012-12-27)
changeset 3152	b286c7993be5
parent 943	1cca90ce0481
permissions	-rw-r--r--