136 lines
3.0 KiB
C
136 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdlib.h>
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static void print_bool(const char *const name, const bool val)
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{
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printf(" %-46s : constant boolean := %s;\n",
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name, val ? "true" : "false");
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}
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static void print_hex(const char *const name, const char *val)
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{
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unsigned int hexlen;
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printf(" %-46s : constant := 16#", name);
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for (hexlen = strlen(val); hexlen > 0;) {
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const unsigned int len = hexlen % 4 ? : 4;
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char quad[] = "0000";
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unsigned int i;
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for (i = 0; i < len; ++i)
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quad[4 - len + i] = val[i];
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printf("%s", quad);
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val += len;
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hexlen -= len;
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if (hexlen > 0)
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printf("_");
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}
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printf ("#;\n");
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}
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static void print_dec(const char *const name, const char *const val)
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{
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printf(" %-46s : constant := %s;\n", name, val);
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}
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static void print_string(const char *const name, const char *const val)
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{
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printf(" %-46s : constant string := \"%s\";\n", name, val);
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}
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int main(int argc, char *argv[])
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{
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char unset_fmt[256], string_fmt[256], set_fmt[256], line[256];
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char *prefix = "CONFIG", *package = "KConfig";
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if (argc > 3) {
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fprintf(stderr,
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"Usage: %s [<package name> [<config prefix>]]\n\n",
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argv[0]);
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return 1;
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}
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if (argc > 2)
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prefix = argv[2];
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if (argc > 1)
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package = argv[1];
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snprintf(set_fmt, sizeof(set_fmt), "%s_%%255[^=]=%%255s", prefix);
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snprintf(string_fmt, sizeof(string_fmt),
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"%s_%%255[^=]=\"%%255[^\"]\"", prefix);
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snprintf(unset_fmt, sizeof(unset_fmt),
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"# %s_%%255s is not set", prefix);
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printf("package %s is\n\n", package);
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while (fgets(line, sizeof(line), stdin)) {
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char name[256], val[256];
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if (line[strlen(line) - 1] != '\n') {
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fprintf(stderr,
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"Line longer than %zu chars, skipping...\n",
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sizeof(line) - 1);
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while (fgets(line, sizeof(line), stdin)) {
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if (line[strlen(line) - 1] == '\n')
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break;
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}
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continue;
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}
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if (sscanf(line, unset_fmt, name) == 1) {
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print_bool(name, false);
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continue;
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}
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if (sscanf(line, string_fmt, name, val) == 2) {
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print_string(name, val);
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continue;
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}
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switch (sscanf(line, set_fmt, name, val)) {
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case 1:
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/* ignore for now, our Kconfig is full of these atm */
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/* fprintf(stderr, "unset non-bool: %s=\n", name); */
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continue;
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case 2:
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if (strcmp(val, "\"\"") == 0) {
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print_string(name, "");
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} else if (strcmp(val, "y") == 0) {
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print_bool(name, true);
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} else if (strncmp(val, "0x", 2) == 0) {
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print_hex(name, val + 2);
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} else if (isdigit(val[0]) || (val[0] == '-' && isdigit(val[1]))) {
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print_dec(name, val);
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} else {
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fprintf(stderr,
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"toada: Error: Couldn't parse value '%s' for '%s'\n",
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val, name);
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exit(1);
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}
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continue;
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default:
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break;
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}
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unsigned int i = 0;
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while (isspace(line[i]))
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++i;
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if (line[i] == '#') {
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printf(" --%s", line + i + 1);
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continue;
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} else if (i == strlen(line)) {
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continue;
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}
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fprintf(stderr, "spurious line:\n%s", line);
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}
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printf("\nend %s;\n", package);
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return 0;
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}
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