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Annotation of qemu/roms/seabios/tools/kconfig/util.c, revision 1.1.1.1

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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