Define simple configuration on INI files.
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string.c 2.8 KiB

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  1. #include "string.h"
  2. typedef bool INI_ConfigLoadParamsStringValidator(const char*);
  3. void INI_ConfigEnsureValidString(INI_ConfigItem* item, const char* buffer) {
  4. if (item->validator) {
  5. INI_ConfigLoadParamsStringValidator* validator = item->validator;
  6. if (validator(buffer)) {
  7. memcpy(item->dest, buffer, item->type.size);
  8. return;
  9. }
  10. memcpy(item->dest, item->default_value, item->type.size);
  11. return;
  12. }
  13. memcpy(item->dest, buffer, item->type.size);
  14. }
  15. void INI_ConfigLoadString(INI_ConfigItem* item, const char* config_path) {
  16. char buffer[item->type.size];
  17. ini_gets(item->section, item->key, item->default_value, buffer, (int32_t) item->type.size, config_path);
  18. INI_ConfigEnsureValidString(item, buffer);
  19. }
  20. INI_ConfigSaveItemResult INI_ConfigSaveString(INI_ConfigItem* item, const char* config_path) {
  21. const char* dest = (const char*) item->dest;
  22. if (item->validator) {
  23. INI_ConfigLoadParamsStringValidator* validator = item->validator;
  24. if (!validator(dest)) {
  25. dest = (const char*) item->default_value;
  26. }
  27. }
  28. if (!ini_puts(item->section, item->key, dest, config_path)) {
  29. return INI_CONFIG_SAVE_ITEM_ERROR;
  30. }
  31. return INI_CONFIG_SAVE_ITEM_OK;
  32. }
  33. void INI_ConfigOverrideString(INI_ConfigItem* item, uint8_t argc, const char* argv[]) {
  34. if (!item->cmdline_option) {
  35. return;
  36. }
  37. const char* cmdline_buffer;
  38. if ((cmdline_buffer = INI_ConfigGetCommandlineOption(argc, argv, item->cmdline_option))) {
  39. INI_ConfigEnsureValidString(item, cmdline_buffer);
  40. }
  41. }
  42. void INI_ConfigLoad(INI_ConfigItem item[], const char* config_path) {
  43. uint8_t i;
  44. for (i = 0; item[i].type.size > 0; i += 1) {
  45. if (!item[i].type.load) {
  46. continue;
  47. }
  48. item[i].type.load(&item[i], config_path);
  49. }
  50. }
  51. INI_ConfigSaveResult INI_ConfigSave(INI_ConfigItem item[], const char* config_path) {
  52. uint8_t i;
  53. int32_t problems = 0;
  54. for (i = 0; item[i].type.size > 0; i += 1) {
  55. int32_t result = item[i].type.save ? item[i].type.save(&item[i], config_path) : 0;
  56. if (result < 0) {
  57. problems |= (1 << (int32_t) i);
  58. }
  59. }
  60. return -problems;
  61. }
  62. void INI_ConfigOverride(INI_ConfigItem item[], uint8_t argc, const char* argv[]) {
  63. uint8_t i;
  64. for (i = 0; item[i].type.size > 0; i += 1) {
  65. if (!item[i].type.override) {
  66. continue;
  67. }
  68. item[i].type.override(&item[i], argc, argv);
  69. // TODO specify command-line arg external from config item?
  70. }
  71. }
  72. INI_ConfigInitializeResult INI_ConfigInitialize(INI_ConfigItem item[], const char* config_path, uint8_t argc, const char* argv[]) {
  73. INI_ConfigLoad(item, config_path);
  74. INI_ConfigSaveResult save_result = INI_ConfigSave(item, config_path);
  75. if (save_result < 0) {
  76. return INI_CONFIG_INITIALIZE_RESULT_ERROR;
  77. }
  78. INI_ConfigOverride(item, argc, argv);
  79. if (save_result > 0) {
  80. return INI_CONFIG_INITIALIZE_RESULT_WARNING;
  81. }
  82. return INI_CONFIG_INITIALIZE_RESULT_OK;
  83. }