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Annotation of qemu/roms/seabios/tools/kconfig/util.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (C) 2002-2005 Roman Zippel <[email protected]>
        !             3:  * Copyright (C) 2002-2005 Sam Ravnborg <[email protected]>
        !             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: 

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