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feat: implemented argo_write_value

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This commit is contained in:
Renge 2022-02-17 00:39:38 -05:00
parent 1589be8e64
commit 63ca6742c1
1 changed files with 254 additions and 21 deletions
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267
hw1/src/argo.c
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@ -5,7 +5,10 @@
#include "global.h"
#include "debug.h"
// ARGO_VALUE *argo_read_value_helper(FILE *f, ARGO_VALUE *this);
int argo_write_basic(ARGO_BASIC *b, FILE *f);
int argo_write_object(ARGO_VALUE *o, FILE *f);
int argo_write_array(ARGO_VALUE *a, FILE *f);
int argo_write_number_helper(ARGO_STRING *s, FILE *f);
/**
* @brief Read JSON input from a specified input stream, parse it,
* and return a data structure representing the corresponding value.
@ -29,9 +32,8 @@
*/
// ARGO_VALUE *argo_read_value(FILE *f) {
// // TO BE IMPLEMENTED.
// argo_value_storage->next = NULL;
// argo_value_storage->prev = NULL;
// return argo_read_value_helper(f, argo_value_storage);
// return NULL;
// }
// ARGO_VALUE *argo_read_value_helper(FILE *f, ARGO_VALUE *this) {
@ -56,7 +58,6 @@
// return this;
// }
/**
* @brief Read JSON input from a specified input stream, attempt to
* parse it as a JSON string literal, and return a data structure
@ -120,10 +121,31 @@
* @return Zero if the operation is completely successful,
* nonzero if there is any error.
*/
// int argo_write_value(ARGO_VALUE *v, FILE *f) {
// TO BE IMPLEMENTED.
// abort();
// }
int argo_write_value(ARGO_VALUE *v, FILE *f)
{
switch (v->type)
{
case ARGO_BASIC_TYPE:
argo_write_basic(&v->content.basic, f);
break;
case ARGO_NUMBER_TYPE:
argo_write_number(&v->content.number, f);
break;
case ARGO_STRING_TYPE:
argo_write_string(&v->content.string, f);
break;
case ARGO_OBJECT_TYPE:
argo_write_object(v->content.object.member_list, f);
break;
case ARGO_ARRAY_TYPE:
argo_write_array(v->content.array.element_list, f);
break;
default:
abort();
break;
}
return 0;
}
/**
* @brief Write canonical JSON representing a specified string
@ -145,10 +167,25 @@
* @return Zero if the operation is completely successful,
* nonzero if there is any error.
*/
// int argo_write_string(ARGO_STRING *s, FILE *f) {
// TO BE IMPLEMENTED.
// abort();
// }
int argo_write_basic(ARGO_BASIC *b, FILE *f)
{
switch (*b)
{
case ARGO_NULL:
fprintf(f, ARGO_NULL_TOKEN);
break;
case ARGO_TRUE:
fprintf(f, ARGO_TRUE_TOKEN);
break;
case ARGO_FALSE:
fprintf(f, ARGO_FALSE_TOKEN);
break;
default:
return -1;
break;
}
return 0;
}
/**
* @brief Write canonical JSON representing a specified number
@ -168,7 +205,203 @@
* @return Zero if the operation is completely successful,
* nonzero if there is any error.
*/
// int argo_write_number(ARGO_NUMBER *n, FILE *f) {
// TO BE IMPLEMENTED.
// abort();
// }
int argo_write_number(ARGO_NUMBER *n, FILE *f)
{
if (n->valid_int)
{
fprintf(f, "%ld", n->int_value);
}
else if (n->valid_float && n->float_value < 1 && n->float_value >= 0.1)
{
fprintf(f, "%f", n->float_value);
}
else if (n->valid_string)
{
return argo_write_number_helper(&n->string_value, f);
}
else
{
return -1;
}
return 0;
}
int argo_write_number_helper(ARGO_STRING *s, FILE *f)
{
int *c = s->content;
int num = 0, exp = 0, exp_tmp = 0, is_before_separator = 1, num_is_plus = 1, started = 0, exp_is_plus = 1, is_num = 1, integer_is_zero = 0, fractional_is_zero = 1;
for (size_t index = 0; index < s->length; index++, c++)
{
if (is_num)
{
if (argo_is_digit(*c))
{
num = num * 10 + (*c - '0');
if (is_before_separator && num)
{
exp += 1;
}
if (integer_is_zero && fractional_is_zero)
{
if (*c == '0')
{
exp -= 1;
}
else
{
fractional_is_zero = 0;
}
}
}
else if (argo_is_exponent(*c))
{
started = 0, is_num = 0;
continue;
}
else if (*c == '-' && !started)
{
num_is_plus = -1;
}
else if (*c == '+' && !started)
{
}
else if (*c == '.' && is_before_separator)
{
is_before_separator = 0;
if (!num)
{
integer_is_zero = 1;
}
}
else
{
return -1;
}
started = 1;
}
else
{
if (argo_is_digit(*c))
{
exp_tmp = exp_tmp * 10 + (*c - '0');
}
else if (*c == '-' && !started)
{
exp_is_plus = -1;
}
else if (*c == '+' && !started)
{
}
else {
return -1;
}
started = 1;
}
}
exp = exp_is_plus * exp_tmp + exp;
if (num_is_plus == -1)
{
fprintf(f, "-");
}
while (num % 10 == 0 && num != 0)
{
num /= 10;
}
fprintf(f, "0.%d", num);
if (exp && num != 0)
{
fprintf(f, "e%d", exp);
}
return 0;
}
int argo_write_string(ARGO_STRING *s, FILE *f)
{
fprintf(f, "\"");
int *c = s->content;
for (size_t index = 0; index < s->length; index++, c++)
{
switch (*c)
{
case ARGO_BS:
fprintf(f, "\\b");
break;
case ARGO_FF:
fprintf(f, "\\f");
break;
case ARGO_LF:
fprintf(f, "\\n");
break;
case ARGO_CR:
fprintf(f, "\\r");
break;
case ARGO_HT:
fprintf(f, "\\t");
break;
case ARGO_BSLASH:
fprintf(f, "\\\\");
break;
case ARGO_QUOTE:
fprintf(f, "\\\"");
break;
default:
if (argo_is_control(*c))
{
int tmp = 0xf;
char lsb = *c & 0xff;
if (lsb <= 0xf)
{
fprintf(f, "\\u000%x", lsb);
}
else
{
fprintf(f, "\\u00%x", lsb);
}
}
else
{
fprintf(f, "%c", *c);
}
break;
}
}
fprintf(f, "\"");
return 0;
}
int argo_write_object(ARGO_VALUE *o, FILE *f)
{
fprintf(f, "{");
ARGO_VALUE *ptr = o;
while (ptr->next->type != ARGO_NO_TYPE)
{
argo_write_string(&ptr->next->name, f);
fprintf(f, ":");
argo_write_value(ptr->next, f);
ptr = ptr->next;
if (ptr->next->type != ARGO_NO_TYPE)
{
fprintf(f, ",");
}
}
fprintf(f, "}");
return 0;
}
int argo_write_array(ARGO_VALUE *a, FILE *f)
{
fprintf(f, "[");
ARGO_VALUE *ptr = a;
while (ptr->next->type != ARGO_NO_TYPE)
{
argo_write_value(ptr->next, f);
ptr = ptr->next;
if (ptr->next->type != ARGO_NO_TYPE)
{
fprintf(f, ",");
}
}
fprintf(f, "]");
return 0;
}