169 lines
2.7 KiB
C
169 lines
2.7 KiB
C
#include "pp_ifdef.h"
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#include "pp_defines.h"
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#include "expand_line.h"
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#include "utils.h"
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#include "pp_line_id.h"
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#include "line_handler.h"
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#include <stdlib.h>
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int _is_sym_defined(void *def_map, char *ifdef_line);
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int expand_ifdef(void *def_map, const struct str_dyn_arr *inc_dirs,
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FILE *source, FILE *out)
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{
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char line[PP_LINE_LEN + 1];
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char *exp_line;
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int ret;
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int line_len;
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int if_en;
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int else_en;
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if_en = 0;
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else_en = 0;
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while (fgets(line, PP_LINE_LEN, source)) {
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if (IS_ENDIF_LINE(line))
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break;
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if (if_en && IS_ELSE_LINE(line)) {
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ret = skip_until(source, SKIP_UNTIL_ENDIF_LINE);
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if (ret == -1)
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return PP_FAILED;
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if_en = 0;
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continue;
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}
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if (if_en || else_en) {
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ret = line_handler(
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line,
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def_map,
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inc_dirs,
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source,
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out
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);
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if (ret == PP_FAILED)
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return ret;
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continue;
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}
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if (IS_IFDEF_LINE(line)) {
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exp_line = get_expanded_line(def_map, line);
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if (!exp_line)
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return PP_FAILED;
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if (!_is_sym_defined(def_map, line)) {
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ret = skip_until(
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source,
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SKIP_UNTIL_CURR_BRANCH_END
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);
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if (ret == -1)
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return PP_FAILED;
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fgets(line, PP_LINE_LEN, source);
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if (IS_ELSE_LINE(line)) {
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else_en = 1;
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} else {
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line_len = strlen(line);
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ret = fseek(
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source,
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-line_len,
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SEEK_CUR
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);
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if (ret == -1)
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return PP_FAILED;
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}
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} else {
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if_en = 1;
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}
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free(exp_line);
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continue;
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}
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if (IS_IFNDEF_LINE(line)) {
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exp_line = get_expanded_line(def_map, line);
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if (!exp_line)
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return PP_FAILED;
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if (_is_sym_defined(def_map, line)) {
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ret = skip_until(
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source,
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SKIP_UNTIL_CURR_BRANCH_END
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);
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if (ret == -1)
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return PP_FAILED;
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fgets(line, PP_LINE_LEN, source);
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if (IS_ELSE_LINE(line)) {
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else_en = 1;
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} else {
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line_len = strlen(line);
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ret = fseek(
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source,
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-line_len,
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SEEK_CUR
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);
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if (ret == -1)
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return PP_FAILED;
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}
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} else {
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if_en = 1;
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}
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free(exp_line);
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continue;
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}
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}
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return PP_OK;
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}
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int _is_sym_defined(void *def_map, char *ifdef_line)
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{
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char *sym;
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char *mapp;
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int sym_len;
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int ret;
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sym = NULL;
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mapp = NULL;
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if (!strncmp(ifdef_line, IFDEF_LINE_START, IFDEF_LINE_START_SZ))
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sym = ifdef_line + IFDEF_LINE_START_SZ;
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else if (!strncmp(ifdef_line, IFNDEF_LINE_START, IFNDEF_LINE_START_SZ))
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sym = ifdef_line + IFNDEF_LINE_START_SZ;
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if (!sym)
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return 0;
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sym_len = strlen(sym);
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sym[sym_len - 1] = 0x00;
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ret = hashmap_get(def_map, sym, &mapp);
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if (ret == MAP_BAD_ARGS) {
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ret = 0;
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goto rettore_line_and_exit;
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}
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ret = ret == MAP_OK && mapp;
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rettore_line_and_exit:
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sym[sym_len - 1] = '\n';
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return ret;
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}
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