Patrick Georgi | 7333a11 | 2020-05-08 20:48:04 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
Nico Huber | 533bc0a | 2019-01-01 19:03:33 +0100 | [diff] [blame] | 2 | |
| 3 | #include <ctype.h> |
| 4 | #include <stdio.h> |
| 5 | #include <string.h> |
| 6 | #include <stdbool.h> |
| 7 | |
| 8 | static void print_bool(const char *const name, const bool val) |
| 9 | { |
| 10 | printf(" %-46s : constant boolean := %s;\n", |
| 11 | name, val ? "true" : "false"); |
| 12 | } |
| 13 | |
| 14 | static void print_hex(const char *const name, const char *val) |
| 15 | { |
| 16 | unsigned int hexlen; |
| 17 | |
| 18 | printf(" %-46s : constant := 16#", name); |
| 19 | for (hexlen = strlen(val); hexlen > 0;) { |
| 20 | const unsigned int len = hexlen % 4 ? : 4; |
| 21 | char quad[] = "0000"; |
| 22 | unsigned int i; |
| 23 | |
| 24 | for (i = 0; i < len; ++i) |
| 25 | quad[4 - len + i] = val[i]; |
| 26 | printf("%s", quad); |
| 27 | |
| 28 | val += len; |
| 29 | hexlen -= len; |
| 30 | if (hexlen > 0) |
| 31 | printf("_"); |
| 32 | } |
| 33 | printf ("#;\n"); |
| 34 | } |
| 35 | |
| 36 | static void print_dec(const char *const name, const char *const val) |
| 37 | { |
| 38 | printf(" %-46s : constant := %s;\n", name, val); |
| 39 | } |
| 40 | |
| 41 | static void print_string(const char *const name, const char *const val) |
| 42 | { |
| 43 | printf(" %-46s : constant string := \"%s\";\n", name, val); |
| 44 | } |
| 45 | |
| 46 | int main(int argc, char *argv[]) |
| 47 | { |
| 48 | char unset_fmt[256], string_fmt[256], set_fmt[256], line[256]; |
| 49 | char *prefix = "CONFIG", *package = "KConfig"; |
| 50 | |
| 51 | if (argc > 3) { |
| 52 | fprintf(stderr, |
| 53 | "Usage: %s [<package name> [<config prefix>]]\n\n", |
| 54 | argv[0]); |
| 55 | return 1; |
| 56 | } |
| 57 | if (argc > 2) |
| 58 | prefix = argv[2]; |
| 59 | if (argc > 1) |
| 60 | package = argv[1]; |
| 61 | |
| 62 | snprintf(set_fmt, sizeof(set_fmt), "%s_%%255[^=]=%%255s", prefix); |
| 63 | snprintf(string_fmt, sizeof(string_fmt), |
| 64 | "%s_%%255[^=]=\"%%255[^\"]\"", prefix); |
| 65 | snprintf(unset_fmt, sizeof(unset_fmt), |
| 66 | "# %s_%%255s is not set", prefix); |
| 67 | |
| 68 | printf("package %s is\n\n", package); |
| 69 | |
| 70 | while (fgets(line, sizeof(line), stdin)) { |
| 71 | char name[256], val[256]; |
| 72 | |
| 73 | if (line[strlen(line) - 1] != '\n') { |
| 74 | fprintf(stderr, |
| 75 | "Line longer than %zu chars, skipping...\n", |
| 76 | sizeof(line) - 1); |
| 77 | while (fgets(line, sizeof(line), stdin)) { |
| 78 | if (line[strlen(line) - 1] == '\n') |
| 79 | break; |
| 80 | } |
| 81 | continue; |
| 82 | } |
| 83 | |
| 84 | if (sscanf(line, unset_fmt, name) == 1) { |
| 85 | print_bool(name, false); |
| 86 | continue; |
| 87 | } |
| 88 | |
| 89 | if (sscanf(line, string_fmt, name, val) == 2) { |
| 90 | print_string(name, val); |
| 91 | continue; |
| 92 | } |
| 93 | |
| 94 | switch (sscanf(line, set_fmt, name, val)) { |
| 95 | case 1: |
| 96 | /* ignore for now, our Kconfig is full of these atm */ |
| 97 | /* fprintf(stderr, "unset non-bool: %s=\n", name); */ |
| 98 | continue; |
| 99 | case 2: |
| 100 | if (strcmp(val, "\"\"") == 0) { |
| 101 | print_string(name, ""); |
| 102 | } else if (strcmp(val, "y") == 0) { |
| 103 | print_bool(name, true); |
| 104 | } else if (strncmp(val, "0x", 2) == 0) { |
| 105 | print_hex(name, val + 2); |
| 106 | } else if (isdigit(val[0])) { |
| 107 | print_dec(name, val); |
| 108 | } else { |
| 109 | fprintf(stderr, |
| 110 | "couldn't parse value '%s' for '%s'\n", |
| 111 | val, name); |
| 112 | } |
| 113 | continue; |
| 114 | default: |
| 115 | break; |
| 116 | } |
| 117 | |
| 118 | unsigned int i = 0; |
| 119 | while (isspace(line[i])) |
| 120 | ++i; |
| 121 | if (line[i] == '#') { |
| 122 | printf(" --%s", line + i + 1); |
| 123 | continue; |
| 124 | } else if (i == strlen(line)) { |
| 125 | continue; |
| 126 | } |
| 127 | |
| 128 | fprintf(stderr, "spurious line:\n%s", line); |
| 129 | } |
| 130 | |
| 131 | printf("\nend %s;\n", package); |
| 132 | return 0; |
| 133 | } |