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/**
* mds — A micro-display server
* Copyright © 2014, 2015, 2016 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "parse-error.h"
#include "paths.h"
#include <stdlib.h>
#include <alloca.h>
#include <string.h>
/**
* Print information about a parsing error
*
* @param this The error structure
* @param output The output file
* @param desc The description of the error
*/
static void print(const mds_kbdc_parse_error_t* restrict this, FILE* restrict output, const char* restrict desc)
{
size_t i, n, start = 0, end = 0;
const char* restrict code = this->code;
char* restrict path = relpath(this->pathname, NULL);
/* Convert bytes count to character count for the code position. */
for (i = 0, n = this->start; i < n; i++)
if ((code[i] & 0xC0) != 0x80)
start++;
for (n = this->end; i < n; i++)
if ((code[i] & 0xC0) != 0x80)
end++;
end += start;
/* Print error information. */
fprintf(output, "\033[01m%s\033[21m:", path ? path : this->pathname);
free(path);
if (this->error_is_in_file)
fprintf(output, "%zu:%zu–%zu:", this->line + 1, start, end);
switch (this->severity)
{
case MDS_KBDC_PARSE_ERROR_NOTE: fprintf(output, " \033[01;36mnote:\033[00m "); break;
case MDS_KBDC_PARSE_ERROR_WARNING: fprintf(output, " \033[01;35mwarning:\033[00m "); break;
case MDS_KBDC_PARSE_ERROR_ERROR: fprintf(output, " \033[01;31merror:\033[00m "); break;
case MDS_KBDC_PARSE_ERROR_INTERNAL_ERROR: fprintf(output, " \033[01;31minternal error:\033[00m "); break;
default:
abort();
break;
}
if (this->error_is_in_file)
{
fprintf(output, "%s\n %s\n \033[01;32m", desc, code);
i = 0;
for (n = start; i < n; i++) fputc(' ', output);
for (n = end; i < n; i++) fputc('^', output);
}
else
fprintf(output, "%s\n", desc);
fprintf(output, "\033[00m\n");
}
/**
* Print information about a parsing error
*
* @param this The error structure
* @param output The output file
*/
void mds_kbdc_parse_error_print(const mds_kbdc_parse_error_t* restrict this, FILE* restrict output)
{
ssize_t m;
size_t n;
char* desc;
char* dend = this->description + strlen(this->description);
char* dstart;
char* dptr;
char* p;
char* q;
/* Count the number points in the description we should modify to format it. */
for (p = this->description, n = 0;;)
{
if (q = strstr(p, "‘"), q == NULL) q = dend;
if (p = strstr(p, "’"), p == NULL) p = dend;
if (q < p) p = q;
if (*p++) n++;
else break;
}
/* Allocate string for the formatted description. */
n = 1 + strlen(this->description) + strlen("\033[xxm’") * n;
dptr = desc = alloca(n * sizeof(char));
/* Format description. */
for (p = this->description;;)
{
dstart = p;
if (q = strstr(p, "‘"), q == NULL) q = dend;
if (p = strstr(p, "’"), p == NULL) p = dend;
if (q < p) p = q;
if ((n = (size_t)(p - dstart)))
memcpy(dptr, dstart, n), dptr += n;
if (p == dend)
break;
if (strstr(p, "‘") == p) sprintf(dptr, "\033[01m‘%zn", &m), dptr += (size_t)m, p += strlen("‘");
else sprintf(dptr, "’\033[21m%zn", &m), dptr += (size_t)m, p += strlen("’");
}
*dptr = '\0';
/* Print the error. */
print(this, output, desc);
}
/**
* Release all resources allocated in a `mds_kbdc_parse_error_t*`
*
* @param this The error structure
*/
void mds_kbdc_parse_error_destroy(mds_kbdc_parse_error_t* restrict this)
{
if (this == NULL)
return;
free(this->pathname), this->pathname = NULL;
free(this->code), this->code = NULL;
free(this->description), this->description = NULL;
}
/**
* Release all resources allocated in a `mds_kbdc_parse_error_t*`
* and release the allocation of the structure itself
*
* @param this The error structure
*/
void mds_kbdc_parse_error_free(mds_kbdc_parse_error_t* restrict this)
{
mds_kbdc_parse_error_destroy(this);
free(this);
}
/**
* Release all resources allocated in a `NULL`-terminated group
* of `mds_kbdc_parse_error_t*`:s
*
* @param this The group of error structures
*/
void mds_kbdc_parse_error_destroy_all(mds_kbdc_parse_error_t** restrict these)
{
mds_kbdc_parse_error_t* restrict that;
if (these == NULL)
return;
while (that = *these, that != NULL)
mds_kbdc_parse_error_free(that), *these++ = NULL;
}
/**
* Release all resources allocated in a `NULL`-terminated group of
* `mds_kbdc_parse_error_t*`:s and release the allocation of the group itself
*
* @param this The group of error structures
*/
void mds_kbdc_parse_error_free_all(mds_kbdc_parse_error_t** restrict these)
{
mds_kbdc_parse_error_destroy_all(these);
free(these);
}
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