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/*
* Copyright (C) 2025 Liquidaty and zsv contributors. All rights reserved.
*
* This file is part of zsv/lib, distributed under the MIT license as defined at
* https://opensource.org/licenses/MIT
*/
#include <stdio.h>
#include <errno.h>
#define ZSV_COMMAND check
#include "zsv_command.h"
#define _GNU_SOURCE 1
#include <string.h>
#include <zsv/utils/arg.h>
#include <zsv/utils/err.h>
#ifdef USE_SIMDUTF
#include "check/simdutf_wrapper.h"
#define USAGE_APPNAME APPNAME " (simdutf8)"
#else
#include "check/utf8.c"
#define USAGE_APPNAME APPNAME
#endif
struct zsv_check_data {
FILE *in;
FILE *out;
const char *input_path;
zsv_parser parser;
size_t row_ix;
size_t column_count;
int err;
unsigned char display_row : 1;
unsigned char check_utf8 : 1;
unsigned char _ : 6;
};
#ifdef USE_SIMDUTF
#define UTF8VALIDATOR simdutf_is_valid_utf8
#else
#define UTF8VALIDATOR utf8_is_valid
#endif
static void zsv_check_row(void *ctx) {
struct zsv_check_data *data = ctx;
size_t column_count = zsv_cell_count(data->parser);
unsigned const char *row_start = NULL;
size_t row_len;
if (column_count != data->column_count) {
fprintf(data->out, "Row %zu column count (%zu) differs from header (%zu)", data->row_ix, column_count,
data->column_count);
data->err = 1;
if (data->display_row && column_count > 0) {
row_start = zsv_get_cell(data->parser, 0).str;
struct zsv_cell last_cell = zsv_get_cell(data->parser, column_count - 1);
row_len = (last_cell.str + last_cell.len - row_start);
fprintf(data->out, ": %.*s", (int)row_len, row_start);
}
fprintf(data->out, "\n");
}
if (data->check_utf8) {
if (!row_start) {
row_start = zsv_get_cell(data->parser, 0).str;
struct zsv_cell last_cell = zsv_get_cell(data->parser, column_count - 1);
row_len = (last_cell.str + last_cell.len - row_start);
}
if (row_len > 0 && !UTF8VALIDATOR(row_start, row_len)) {
data->err = 1;
fprintf(data->out, "Row %zu invalid utf8", data->row_ix);
if (data->display_row)
fprintf(data->out, ": %.*s", (int)row_len, row_start);
fprintf(data->out, "\n");
}
}
data->row_ix++;
}
static void zsv_check_header(void *ctx) {
struct zsv_check_data *data = ctx;
data->column_count = zsv_cell_count(data->parser);
data->row_ix++;
zsv_set_row_handler(data->parser, zsv_check_row);
}
static int zsv_check_usage(void) {
const char *zsv_check_usage_msg[] = {
USAGE_APPNAME ": check input for anomalies",
"",
"Usage: " APPNAME " <filename>",
"",
"Options:",
" -o,--output <path> : output to specified file path",
" --display-row : display the row contents with any reported issue",
// " --utf8 : check for invalid utf8",
// " --all : run all checks",
"",
"If no check options are provided, all checks are run",
NULL,
};
for (size_t i = 0; zsv_check_usage_msg[i]; i++)
fprintf(stdout, "%s\n", zsv_check_usage_msg[i]);
return 1;
}
static void zsv_check_cleanup(struct zsv_check_data *data) {
if (data->in && data->in != stdin)
fclose(data->in);
if (data->out && data->out != stdout)
fclose(data->out);
}
int ZSV_MAIN_FUNC(ZSV_COMMAND)(int argc, const char *argv[], struct zsv_opts *optsp,
struct zsv_prop_handler *custom_prop_handler) {
if (argc < 1 || (argc > 1 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")))) {
zsv_check_usage();
return 0;
}
struct zsv_opts opts = *optsp;
struct zsv_check_data data = {0};
int err = 0;
for (int arg_i = 1; !err && arg_i < argc; arg_i++) {
const char *arg = argv[arg_i];
if (!strcmp(arg, "--display-row"))
data.display_row = 1;
// else if (!strcmp(arg, "--utf8"))
// data.check_utf8 = 1;
else if (!strcmp(arg, "-o") || !strcmp(arg, "--output")) {
if (data.out)
err = zsv_printerr(1, "Output specified more than once");
else {
const char *fn = zsv_next_arg(++arg_i, argc, argv, &err);
if (!(fn && *fn))
err = zsv_printerr(1, "%s requires a filename value", arg);
else if (!(data.out = fopen(fn, "wb"))) {
err = errno;
perror(fn);
}
}
} else if (!data.in) {
#ifndef NO_STDIN
if (!strcmp(arg, "-"))
data.in = stdin;
#endif
if (!data.in) {
if (!(data.in = fopen(arg, "rb"))) {
err = 1;
perror(arg);
} else
data.input_path = arg;
}
} else {
fprintf(stderr, "Unrecognized option: %s\n", arg);
err = 1;
}
}
if (!err && !data.in) {
#ifndef NO_STDIN
data.in = stdin;
#else
fprintf(stderr, "Please specify an input file\n");
err = 1;
#endif
}
if (err) {
zsv_check_cleanup(&data);
return 1;
}
data.check_utf8 = 1;
if (!data.out)
data.out = stdout;
opts.row_handler = zsv_check_header;
opts.stream = data.in;
opts.ctx = &data;
if (zsv_new_with_properties(&opts, custom_prop_handler, data.input_path, &data.parser) != zsv_status_ok)
err = 1;
else {
// process the input data
zsv_handle_ctrl_c_signal();
enum zsv_status status;
while (!zsv_signal_interrupted && (status = zsv_parse_more(data.parser)) == zsv_status_ok)
;
zsv_finish(data.parser);
zsv_delete(data.parser);
}
zsv_check_cleanup(&data);
if (!err)
err = data.err;
return err;
}
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