add json printing and parsing (of strings)
This commit is contained in:
Felix Van der Jeugt
parent
563b1b0c5a
commit
a13c6ecb3a
150
json.c
Normal file
150
json.c
Normal file
@ -0,0 +1,150 @@
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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 "json.h"
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#include "sortedmap.h"
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#include "arraylist.h"
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/* TODO */
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Json * parse_map(FILE *stream) { return NULL; /* TODO */ }
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Json * parse_list(FILE *stream) { return NULL; /* TODO */ }
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Json * parse_string(FILE *stream) {
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int i = 0, cap = 10;
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char * buffer = calloc(cap, sizeof(char));
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char c;
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int escaped = 0;
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Json * json;
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while ((c = getc(stream)) != EOF) {
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printf("char: %c, buffer: %s, i: %d\n", c, buffer, i);
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switch (c) {
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case '\\':
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escaped = 1;
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break;
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case '"':
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if (!escaped) {
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json = malloc(sizeof(Json));
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json->type = STRING;
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json->value.string = calloc(i + 1, sizeof(char));
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memcpy(json->value.string, buffer, i);
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free(buffer);
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return json;
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}
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default:
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if (i == cap) {
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cap *= 2;
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buffer = realloc(buffer, cap * sizeof(char));
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}
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buffer[i++] = c;
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}
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}
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return NULL;
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}
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Json * parse_true(FILE *stream) { return NULL; /* TODO */ }
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Json * parse_false(FILE *stream) { return NULL; /* TODO */ }
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Json * parse_number(FILE *stream, char first) { return NULL; /* TODO */ }
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Json * json_parse(FILE *stream) {
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char c;
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Json * json = NULL;
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while ((c = getc(stream)) != EOF) {
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switch (c) {
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case '{':
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return parse_map(stream);
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case '[':
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return parse_list(stream);
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case '"':
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return parse_string(stream);
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case 't':
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return parse_true(stream);
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case 'f':
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return parse_false(stream);
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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return parse_number(stream, c);
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case ' ':
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case '\n':
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case '\t':
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break; /* whitespace */
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default:
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fprintf(stderr, "encountered char: '%c'", c);
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}
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}
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return json;
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}
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struct printacc {
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FILE *stream;
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int index;
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};
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void * json_print_map(void * voidacc, char *key, void *value) {
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struct printacc *acc = (struct printacc *) voidacc;
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return acc;
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}
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void json_print(Json *this, FILE *stream) {
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int i;
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struct printacc acc = { NULL, 0 };
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switch (this->type) {
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case BOOLEAN:
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fprintf(stream, this->value.boolean == 0 ? "false" : "true");
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break;
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case STRING:
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fprintf(stream, "\"%s\"", this->value.string);
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break;
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case NUMBER:
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fprintf(stream, "%f", this->value.number);
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break;
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case LIST:
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fprintf(stream, "[");
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if (this->value.list->size > 0) {
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json_print((Json *) get_list(this->value.list, 0), stream);
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for(i = 1; i < this->value.list->size; i++) {
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fprintf(stream, ", ");
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json_print((Json *) get_list(this->value.list, i), stream);
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}
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}
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fprintf(stream, "]");
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break;
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case MAP:
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fprintf(stream, "{");
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acc.stream = stream;
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fold_map((void *) &acc, this->value.map, json_print_map);
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fprintf(stream, "}");
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break;
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}
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}
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void json_free(Json *this) {
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switch (this->type) {
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case BOOLEAN:
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/* TODO */
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break;
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case STRING:
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/* TODO */
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free(this->value.string);
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break;
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case NUMBER:
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/* TODO */
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break;
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case LIST:
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/* TODO */
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break;
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case MAP:
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/* TODO */
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break;
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}
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free(this);
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}
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21
json.h
Normal file
21
json.h
Normal file
@ -0,0 +1,21 @@
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#ifndef JSON_HEADER
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#define JSON_HEADER
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#include "sortedmap.h"
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#include "arraylist.h"
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enum jsontype { BOOLEAN, STRING, NUMBER, LIST, MAP };
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typedef struct json {
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enum jsontype type;
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union {
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int boolean;
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char * string;
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double number;
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ArrayList * list;
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SortedMap * map;
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} value;
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} Json;
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Json * json_parse(FILE *stream);
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void json_print(Json *this, FILE *stream);
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void json_free(Json *this);
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#endif
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3
makefile
3
makefile
@ -3,10 +3,11 @@ CFLAGS += -g -Wall -Werror -pedantic -ansi
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all: planarbot inputfile
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valgrind ./planarbot < inputfile
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planarbot: planarbot.o arraylist.o sortedmap.o
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planarbot: planarbot.o arraylist.o sortedmap.o json.o
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planarbot.o: arraylist.h
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arraylist.o: arraylist.h
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sortedmap.o: sortedmap.h
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json.o: json.h arraylist.h sortedmap.h
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clean:
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rm -f *.o planarbot
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@ -4,9 +4,11 @@
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#include "arraylist.h"
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#include "sortedmap.h"
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#include "json.h"
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#define BUF 20
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/*
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struct LIST {
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ArrayList * (*init)();
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void (*add)(ArrayList *, void *);
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@ -14,6 +16,7 @@ struct LIST {
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void (*freeitems)(ArrayList *);
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void (*free)(ArrayList *);
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} LIST = { list, add_list, get_list, free_listitems, free_list };
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*/
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typedef struct planet {
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int ship_count;
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@ -59,7 +62,7 @@ int read_planet(ArrayList *planets) {
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sscanf(owner, "%d", &planet->owner);
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}
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print_planet(planet);
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LIST.add(planets, planet);
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add_list(planets, planet);
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return 0;
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}
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@ -107,6 +110,7 @@ void free_gamestate(Gamestate *this) {
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}
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int main(int argc, char **argv) {
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Json * json = json_parse(stdin);
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Gamestate *gamestate;
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SortedMap *test;
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@ -121,5 +125,7 @@ int main(int argc, char **argv) {
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printf("%s\n", (char *) get_map(test, "awer"));
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print_map(test);
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free_map(test);
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json_print(json, stdout);
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json_free(json);
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return 0;
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}
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166
sortedmap.c
166
sortedmap.c
@ -2,77 +2,65 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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struct intern {
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enum nodetype type;
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char * key;
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struct node * left;
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struct node * right;
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};
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struct leaf {
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enum nodetype type;
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char * key;
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void * value;
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};
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SortedMap * map() {
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return NULL;
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SortedMap *this = malloc(sizeof(SortedMap));
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this->type = EMPTY;
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this->key = NULL;
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return this;
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}
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void * get_map(SortedMap *this, char *key) {
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if (this == NULL) return NULL;
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if (this->type == LEAF) {
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if (strcmp(key, this->key) == 0) return ((struct leaf *) this)->value;
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switch (this->type) {
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case EMPTY:
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return NULL;
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} else {
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case LEAF:
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if (strcmp(key, this->key) == 0) return this->content.value;
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return NULL;
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case INTERN:
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if (strcmp(key, this->key) <= 0) {
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return get_map(((struct intern *) this)->left, key);
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return get_map(this->content.children.l, key);
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} else {
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return get_map(((struct intern *) this)->right, key);
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return get_map(this->content.children.r, key);
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}
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default:
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return NULL;
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}
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}
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SortedMap * put_map(SortedMap *this, char *key, void *value) {
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struct leaf *leaf, *newleaf;
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struct intern *intern;
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int cmp;
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if (this == NULL) {
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struct leaf *leaf = malloc(sizeof(struct leaf));
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SortedMap *leaf, *intern;
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int cmp = this->key != NULL ? strcmp(key, this->key) : 0;
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switch (this->type) {
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case EMPTY:
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this->type = LEAF;
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this->key = key;
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this->content.value = value;
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return this;
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case LEAF:
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if (cmp == 0) {
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this->content.value = value;
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return this;
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}
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leaf = malloc(sizeof(SortedMap));
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leaf->type = LEAF;
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leaf->key = key;
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leaf->value = value;
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return (SortedMap *) leaf;
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} else {
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cmp = strcmp(key, this->key);
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if (this->type == LEAF) {
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leaf = (struct leaf*) this;
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if (cmp == 0) {
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leaf->value = value;
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return (SortedMap *) leaf;
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}
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newleaf = malloc(sizeof(struct leaf));
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newleaf->type = LEAF;
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newleaf->key = key;
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newleaf->value = value;
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intern = malloc(sizeof(struct intern));
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intern->type = INTERN;
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intern->key = leaf->key;
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intern->left = (struct node*) (cmp < 0 ? newleaf : leaf);
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intern->right = (struct node*) (cmp < 0 ? leaf : newleaf);
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return (SortedMap *) intern;
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leaf->content.value = value;
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intern = malloc(sizeof(SortedMap));
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intern->type = INTERN;
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intern->key = this->key;
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intern->content.children.l = cmp < 0 ? leaf : this;
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intern->content.children.r = cmp < 0 ? this : leaf;
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return intern;
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case INTERN:
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if (cmp <= 0) {
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this->content.children.l = put_map(this->content.children.l, key, value);
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return this;
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} else {
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intern = (struct intern*) this;
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if (cmp <= 0) {
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intern->left = put_map(intern->left, key, value);
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return (SortedMap *) intern;
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} else {
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intern->right = put_map(intern->right, key, value);
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return (SortedMap *) intern;
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}
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this->content.children.r = put_map(this->content.children.r, key, value);
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return this;
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}
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default:
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return NULL;
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}
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}
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@ -82,42 +70,64 @@ void print_indent_(int indent) {
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}
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void print_map_(SortedMap *this, int indent) {
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if (this->type == LEAF) {
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struct leaf *leaf = (struct leaf*) this;
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switch (this->type) {
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case EMPTY:
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printf("empty\n");
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break;
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case LEAF:
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print_indent_(indent);
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printf("%s: %s\n", leaf->key, (char *) leaf->value);
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} else {
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struct intern *intern = (struct intern*) this;
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print_map_(intern->left, indent + 1);
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printf("%s: %s\n", this->key, (char *) this->content.value);
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break;
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case INTERN:
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print_map_(this->content.children.r, indent + 1);
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print_indent_(indent);
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printf("%s\n", intern->key);
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print_map_(intern->right, indent + 1);
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printf("%s\n", this->key);
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print_map_(this->content.children.l, indent + 1);
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break;
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}
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}
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void print_map(SortedMap *this) {
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if (this == NULL) printf("empty\n");
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else print_map_(this, 0);
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print_map_(this, 0);
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}
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void * fold_map(SortedMap *this, void * init, void * (*f)(void * acc, char *key, void *value)) {
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switch (this->type) {
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case EMPTY:
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return init;
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case LEAF:
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return f(init, this->key, this->content.value);
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case INTERN:
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return fold_map(fold_map(init, this->content.children.l, f), this->content.children.r, f);
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default:
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return NULL;
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}
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}
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void free_mapvalues(SortedMap *this) {
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if (this == NULL) return;
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else if (this->type == LEAF) free(((struct leaf*) this)->value);
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else {
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struct intern *intern = (struct intern*) this;
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free_mapvalues(intern->left);
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free_mapvalues(intern->right);
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switch (this->type) {
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case EMPTY:
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break;
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case LEAF:
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free(this->content.value);
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break;
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case INTERN:
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free_mapvalues(this->content.children.l);
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free_mapvalues(this->content.children.r);
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break;
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}
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}
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void free_map(SortedMap *this) {
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struct intern *intern;
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if (this == NULL) return;
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else if (this->type == LEAF) free(this);
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else {
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intern = (struct intern*) this;
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free_map(intern->left);
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free_map(intern->right);
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switch (this->type) {
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case EMPTY:
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case LEAF:
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free(this);
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break;
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case INTERN:
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free_map(this->content.children.l);
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free_map(this->content.children.r);
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free(this);
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break;
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}
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}
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10
sortedmap.h
10
sortedmap.h
@ -1,16 +1,24 @@
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#ifndef SORTED_MAP
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#define SORTED_MAP
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enum nodetype { LEAF, INTERN };
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enum nodetype { EMPTY, LEAF, INTERN };
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typedef struct node {
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enum nodetype type;
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char * key;
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union {
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struct children {
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struct node * l;
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struct node * r;
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} children;
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void * value;
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} content;
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} SortedMap;
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SortedMap * map();
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void * get_map(SortedMap *this, char *key);
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SortedMap * put_map(SortedMap *this, char *key, void *value);
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void print_map(SortedMap *this);
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void * fold_map(SortedMap *this, void * init, void * (*f)(void * acc, char *key, void *value));
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void free_mapvalues(SortedMap *this);
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void free_map(SortedMap *this);
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#endif
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