start implimenting a parser
This commit is contained in:
@@ -1,17 +1,9 @@
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#include "lex.yy.h"
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#include "lexer.h"
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#include "../string/string.h"
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#include <stdlib.h>
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void lexer(LexerState state) {
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yyscan_t scanner;
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char *unquoted = unquote(state.content);
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if (unquoted) {
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printf("%s\n", unquoted);
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free(unquoted);
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}
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yylex_init(&scanner);
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yyset_extra(&state, scanner);
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@@ -6,7 +6,7 @@
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TokenStruct* init_token() {
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TokenStruct *tokenStruct = malloc(sizeof(TokenStruct));\
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TokenStruct *tokenStruct = malloc(sizeof(TokenStruct));
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if (tokenStruct == NULL) {
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// handle malloc failure
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return NULL;
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@@ -79,7 +79,8 @@ typedef struct {
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TokenStruct *init_token();
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void add_token(TokenStruct* token,TokenType type, const char* value, int line, int column);
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void add_token(TokenStruct *token, TokenType type, const char *value, int line,
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int column);
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void free_tokens(TokenStruct *token);
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10
src/main.c
10
src/main.c
@@ -1,5 +1,7 @@
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#include "lexer/lexer.h"
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#include "parser/parser.h"
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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@@ -46,9 +48,11 @@ int main() {
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};
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lexer(state);
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free(content);
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for (int i = 0; i<tokenStruct->count; i++) {
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printf("%d\n", tokenStruct->tokens[i].type);
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}
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TaggedValueStruct taggedValueStruct = init_TaggedValueStruct();
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parser(&taggedValueStruct, tokenStruct, false);
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free_tokens(tokenStruct);
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return 0;
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}
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20
src/parser/parser.c
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20
src/parser/parser.c
Normal file
@@ -0,0 +1,20 @@
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#include "parser.h"
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TaggedValue parse_token(TokenStruct * tokenStruct, int *index) {
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Token token = tokenStruct->tokens[*index];
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switch (token.type) {
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case TOKEN_STRING:
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index++;
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return parse_string(token);
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default:
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perror("unreachable");
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exit(0);
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}
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}
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void parser(TaggedValueStruct * taggedValueStruct, TokenStruct * tokenStruct, bool inline_flag) {
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int index = 0;
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while (index < tokenStruct->count) {
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TaggedValueStruct_append(taggedValueStruct, parse_token(tokenStruct, &index));
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}
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}
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9
src/parser/parser.h
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9
src/parser/parser.h
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@@ -0,0 +1,9 @@
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#include "../lexer/token.h"
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#include "string/string.h"
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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void parser(TaggedValueStruct * TaggedValueStruct, TokenStruct * tokenStruct, bool inline_flag);
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TaggedValue parse_token(TokenStruct * tokenStruct, int *index);
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78
src/parser/string/string.c
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78
src/parser/string/string.c
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@@ -0,0 +1,78 @@
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#include "string.h"
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#include "../../lexer/token.h"
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#include <cjson/cJSON.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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char *swap_quotes(const char *input) {
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size_t len = strlen(input);
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char *result = malloc(len + 1);
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if (!result)
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return NULL;
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for (size_t i = 0; i < len; ++i) {
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if (input[i] == '"')
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result[i] = '\'';
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else if (input[i] == '\'')
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result[i] = '"';
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else
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result[i] = input[i];
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}
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result[len] = '\0';
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return result;
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}
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char *unquote(const char *str) {
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if (*str == '\0')
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return NULL;
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char quote = str[0];
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char *swapped = NULL;
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char *unescaped = NULL;
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if (quote == '\'') {
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swapped = swap_quotes(str);
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if (!swapped)
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return NULL;
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str = swapped;
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}
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cJSON *json = cJSON_Parse(str);
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if (!json || !cJSON_IsString(json)) {
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if (swapped)
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free(swapped);
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return NULL;
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}
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// Copy unescaped string before freeing JSON object
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const char *decoded = cJSON_GetStringValue(json);
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if (!decoded) {
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cJSON_Delete(json);
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if (swapped)
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free(swapped);
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return NULL;
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}
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unescaped = strdup(decoded);
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cJSON_Delete(json);
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if (swapped)
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free(swapped);
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// If input was single-quoted, swap quotes back in the output
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if (quote == '\'') {
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char *final = swap_quotes(unescaped);
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free(unescaped);
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return final;
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}
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return unescaped;
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}
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TaggedValue parse_string(Token token) {
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return (TaggedValue){
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TYPE_STRING,
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unquote(token.value)
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};
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}
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8
src/parser/string/string.h
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8
src/parser/string/string.h
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@@ -0,0 +1,8 @@
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#include "../../lexer/token.h"
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#include "../taggedValue.h"
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char *swap_quotes(const char *input);
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char *unquote(const char *str);
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TaggedValue parse_string(Token token);
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26
src/parser/taggedValue.c
Normal file
26
src/parser/taggedValue.c
Normal file
@@ -0,0 +1,26 @@
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#include "taggedValue.h"
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#include <stdlib.h>
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TaggedValueStruct init_TaggedValueStruct() {
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TaggedValueStruct taggedValueStruct = {
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0,
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INITIAL_CAPACITY,
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malloc(sizeof(TaggedValue)*INITIAL_CAPACITY)
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};
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return taggedValueStruct;
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}
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void TaggedValueStruct_append(TaggedValueStruct *TaggedValueStruct,
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TaggedValue TaggedValue) {
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if (TaggedValueStruct->count >= TaggedValueStruct->capacity) {
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TaggedValueStruct->capacity *= 2;
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TaggedValueStruct->TaggedValue =
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realloc(TaggedValueStruct->TaggedValue,
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sizeof(TaggedValue) * TaggedValueStruct->capacity);
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}
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TaggedValueStruct[TaggedValueStruct->count].TaggedValue->data =
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TaggedValue.data;
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TaggedValueStruct[TaggedValueStruct->count].TaggedValue->type =
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TaggedValue.type;
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TaggedValueStruct->count++;
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}
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23
src/parser/taggedValue.h
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23
src/parser/taggedValue.h
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@@ -0,0 +1,23 @@
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typedef enum {
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TYPE_STRING,
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} ValueType;
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typedef struct {
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ValueType type;
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void *data;
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} TaggedValue;
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#define INITIAL_CAPACITY 64
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typedef struct {
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int count;
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int capacity;
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TaggedValue * TaggedValue;
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} TaggedValueStruct;
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TaggedValueStruct init_TaggedValueStruct();
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void TaggedValueStruct_append(TaggedValueStruct *TaggedValueStruct,
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TaggedValue TaggedValue);
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@@ -3,65 +3,6 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <cjson/cJSON.h>
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char *swap_quotes(const char *input) {
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size_t len = strlen(input);
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char *result = malloc(len + 1);
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if (!result) return NULL;
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for (size_t i = 0; i < len; ++i) {
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if (input[i] == '"') result[i] = '\'';
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else if (input[i] == '\'') result[i] = '"';
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else result[i] = input[i];
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}
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result[len] = '\0';
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return result;
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}
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char *unquote(const char *str) {
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if (*str == '\0') return NULL;
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char quote = str[0];
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char *swapped = NULL;
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char *unescaped = NULL;
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if (quote == '\'') {
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swapped = swap_quotes(str);
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if (!swapped) return NULL;
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str = swapped;
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}
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cJSON *json = cJSON_Parse(str);
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if (!json || !cJSON_IsString(json)) {
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if (swapped) free(swapped);
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return NULL;
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}
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// Copy unescaped string before freeing JSON object
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const char *decoded = cJSON_GetStringValue(json);
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if (!decoded) {
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cJSON_Delete(json);
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if (swapped) free(swapped);
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return NULL;
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}
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unescaped = strdup(decoded);
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cJSON_Delete(json);
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if (swapped) free(swapped);
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// If input was single-quoted, swap quotes back in the output
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if (quote == '\'') {
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char *final = swap_quotes(unescaped);
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free(unescaped);
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return final;
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}
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return unescaped;
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}
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const char *WHITE_SPACE = " \t\n\r\f\v";
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@@ -7,9 +7,5 @@ char* cloneString(char* str);
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void stripString(char* str, const char* chars);
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char *swap_quotes(const char *input);
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char *unquote(const char *str);
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#endif // CLONESTRING_H
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55
test.ar
55
test.ar
@@ -1,54 +1 @@
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import "url.ar" as url
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let __makeFile(name, type, data) = do
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let File = {name: name, type: type, data: data}
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let save(path) = do
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let file = file.write(path)
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file.buffer(data)
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file.close()
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File.save = save
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return File
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let __multipart(req, res) = do
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let boundary = buffer().from(req.headers["content-type"].splitN("boundary=", 2)[1])
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let newLineSplit = buffer().from("\r\n\r\n")
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let parts = req.buffer.body.split(boundary)
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for (i from 0 to parts.length) do
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let str = parts[i].to("string")
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if (str == "" || str=="--" || str=="--\r\n") continue
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str = null
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let headers = {}
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let lines = parts[i].splitN(newLineSplit, 2)
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let headerLines = lines[0].to("string").split("\r\n")
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for (j from 0 to headerLines.length) do
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let header = headerLines[j].splitN(": ", 2)
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if (header.length != 2) continue
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headers[header[0].lower()] = header[1]
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if (lines.length != 2) continue
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let body = lines[1]
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if (i != parts.length-1) do
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body = body.slice(0, body.length-4)
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if ("content-disposition" in headers) do
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let disposition = headers["content-disposition"].split("; ")
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if (disposition[0] == "form-data") do
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let name = json.parse(disposition[1].splitN("=", 2)[1])
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if (disposition.length >= 3) do
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let filename = json.parse(disposition[2].splitN("=", 2)[1])
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req.files[name] = __makeFile(filename, headers["content-type"], body)
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else do
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req.formdata[name] = body.to("string")
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res.next()
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let formdata(req, res) = do
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req.formdata = {}
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req.files = {}
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if (req.method != "POST") return res.next()
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if ("content-type" not in req.headers) return res.next()
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let loweredContentType = req.headers["content-type"].lower()
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if (loweredContentType.startswith("multipart/form-data")) return __multipart(req, res)
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else if (loweredContentType.startswith("application/x-www-form-urlencoded")) req.formdata = url.decodeURLQuery(req.buffer.body.to("string"))
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else if (loweredContentType.startswith("application/json")) req.formdata = json.parse(req.buffer.body.to("string"))
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else req.files.file = __makeFile("file", req.headers["content-type"], req.buffer.body)
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res.next()
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"hello world"
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