1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414
|
/* -*- mode: C -*-
*
* File: csv2rec.c
* Date: Fri Aug 20 16:35:25 2010
*
* GNU recutils - csv to rec converter.
*
*/
/* Copyright (C) 2010, 2011, 2012 Jose E. Marchesi */
/* 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 <config.h>
#include <getopt.h>
#include <string.h>
#include <stdlib.h>
#include <xalloc.h>
#include <gettext.h>
#define _(str) gettext (str)
#include <csv.h>
#include <rec.h>
#include <recutl.h>
/* Forward declarations. */
static void parse_args (int argc, char **argv);
static rec_db_t process_csv (void);
static int is_space (unsigned char c);
static int is_term (unsigned char c);
static void field_cb (void *s, size_t len, void *data);
static void record_cb (int c, void *data);
/*
* Types
*/
struct csv2rec_ctx
{
rec_db_t db;
rec_rset_t rset;
rec_record_t record;
size_t num_fields;
size_t lineno;
#define ALLOC_FIELDS 256
bool header_p;
size_t num_field_names;
char **field_names;
};
/*
* Global variables
*/
char *csv2rec_record_type = NULL;
char *csv2rec_csv_file = NULL;
bool csv2rec_strict = false;
bool csv2rec_omit_empty = false;
/*
* Command line options management
*/
enum
{
COMMON_ARGS,
RECORD_TYPE_ARG,
STRICT_ARG,
OMIT_EMPTY_ARG
};
static const struct option GNU_longOptions[] =
{
COMMON_LONG_ARGS,
{"type", required_argument, NULL, RECORD_TYPE_ARG},
{"strict", no_argument, NULL, STRICT_ARG},
{"omit-empty", no_argument, NULL, OMIT_EMPTY_ARG},
{NULL, 0, NULL, 0}
};
/*
* Functions.
*/
void
recutl_print_help (void)
{
/* TRANSLATORS: --help output, csv2rec synopsis.
no-wrap */
printf (_("\
Usage: csv2rec [OPTIONS]... [CSV_FILE]\n"));
/* TRANSLATORS: --help output, csv2rec short description.
no-wrap */
fputs (_("\
Convert csv data into rec data.\n"), stdout);
puts ("");
/* TRANSLATORS: --help output, csv2rec options.
no-wrap */
fputs (_("\
-t, --type=TYPE type name for the converted records; if this\n\
parameter is ommited then no type is used.\n\
-s, --strict be strict parsing the csv file.\n\
-e, --omit-empty omit empty fields.\n"), stdout);
recutl_print_help_common ();
puts ("");
recutl_print_help_footer ();
}
static void
parse_args (int argc,
char **argv)
{
int ret;
char c;
while ((ret = getopt_long (argc,
argv,
"t:se",
GNU_longOptions,
NULL)) != -1)
{
c = ret;
switch (c)
{
COMMON_ARGS_CASES
case RECORD_TYPE_ARG:
case 't':
{
csv2rec_record_type = xstrdup (optarg);
break;
}
case STRICT_ARG:
case 's':
{
csv2rec_strict = true;
break;
}
case OMIT_EMPTY_ARG:
case 'e':
{
csv2rec_omit_empty = true;
break;
}
default:
{
exit (EXIT_FAILURE);
}
}
}
/* Read the name of the csv file, if any. */
if (optind < argc)
{
if ((argc - optind) != 1)
{
recutl_print_help ();
exit (EXIT_FAILURE);
}
csv2rec_csv_file = argv[optind++];
}
}
static int
is_space (unsigned char c)
{
return (c == CSV_SPACE) || (c == CSV_TAB);
}
static int
is_term (unsigned char c)
{
return (c == CSV_CR) || (c == CSV_LF);
}
void
field_cb (void *s, size_t len, void *data)
{
char *str;
char *field_name;
rec_field_t field;
struct csv2rec_ctx *ctx;
size_t i;
ctx = (struct csv2rec_ctx *) data;
str = xmalloc (len + 1);
memcpy (str, s, len);
str[len] = '\0';
if (ctx->header_p)
{
/* Add a new field name to ctx.field_names. */
if ((ctx->num_field_names % ALLOC_FIELDS) == 0)
ctx->field_names =
realloc (ctx->field_names, ((ctx->num_field_names / ALLOC_FIELDS) + 1) * (sizeof(char *) * ALLOC_FIELDS));
/* Normalize the name: spaces and tabs are turned into dashes
'_'. */
for (i = 0; i < strlen (str); i++)
{
if ((str[i] == ' ') || (str[i] == '\t'))
{
str[i] = '_';
}
}
/* Verify that it is a valid field name. */
field_name = str;
if (!rec_field_name_p (field_name))
{
recutl_fatal (_("invalid field name '%s' in header\n"),
str);
}
ctx->field_names[ctx->num_field_names++] = str;
}
else
{
/* Create a new field and insert it in the current record. */
if (!ctx->record)
{
/* Create a new record. */
ctx->record = rec_record_new ();
if (!ctx->record)
recutl_out_of_memory ();
}
if (!csv2rec_omit_empty || (strlen(str) > 0))
{
if (ctx->num_fields > ctx->num_field_names)
{
char *source = csv2rec_csv_file;
if (!source)
{
source = "stdin";
}
fprintf (stderr,
_("%s: %lu: this line contains %lu fields, but %lu header fields were read\n"),
source,
ctx->lineno, ctx->num_field_names, ctx->num_fields);
exit (EXIT_FAILURE);
}
field = rec_field_new (ctx->field_names[ctx->num_fields], str);
rec_mset_append (rec_record_mset (ctx->record), MSET_FIELD, (void *) field, MSET_ANY);
}
ctx->num_fields++;
}
}
void
record_cb (int c, void *data)
{
struct csv2rec_ctx *ctx;
ctx = (struct csv2rec_ctx *) data;
ctx->lineno++;
if (ctx->header_p)
{
ctx->header_p = false;
}
else
{
if (!ctx->rset)
{
/* Create a new record set. */
ctx->rset = rec_rset_new ();
if (!ctx->rset)
recutl_out_of_memory ();
/* Add a type, if needed. */
if (csv2rec_record_type)
{
rec_rset_set_type (ctx->rset, csv2rec_record_type);
}
/* Add it to the database. */
if (!ctx->db)
{
ctx->db = rec_db_new ();
if (!ctx->db)
recutl_out_of_memory ();
}
rec_db_insert_rset (ctx->db, ctx->rset, rec_db_size (ctx->db));
}
/* Add the current record to the record set. */
rec_mset_append (rec_rset_mset (ctx->rset), MSET_RECORD, (void *) ctx->record, MSET_ANY);
ctx->record = NULL;
/* Reset the field counter. */
ctx->num_fields = 0;
}
}
static rec_db_t
process_csv (void)
{
struct csv2rec_ctx ctx;
FILE *in;
struct csv_parser p;
unsigned char options = 0;
char buf[1024];
size_t bytes_read = 0;
/* Initialize the data in the context. */
ctx.db = NULL;
ctx.rset = NULL;
ctx.record = NULL;
ctx.header_p = true;
ctx.field_names = NULL;
ctx.num_field_names = 0;
ctx.num_fields = 0;
ctx.lineno = 0;
/* Set the files to read/write from/to.
If a filename was specified, read the csv file from there.
Otherwise use the standard input. The output is written to the
standard output in any case. */
if (csv2rec_csv_file)
{
if (!(in = fopen (csv2rec_csv_file, "r")))
{
recutl_fatal (_("cannot read file %s\n"), csv2rec_csv_file);
}
}
else
{
in = stdin;
}
/* Initialize the csv library. */
if (csv_init (&p, options) != 0)
{
recutl_fatal (_("failed to initialize csv parser\n"));
}
/* Set some properties of the parser. */
if (csv2rec_strict)
{
options |= CSV_STRICT;
csv_set_opts (&p, options);
}
csv_set_space_func (&p, is_space);
csv_set_term_func (&p, is_term);
/* Parse the input file in chunks of data. */
while ((bytes_read = fread (buf, 1, 1024, in)) > 0)
{
if (csv_parse (&p, buf, bytes_read, field_cb, record_cb, &ctx) != bytes_read)
{
recutl_fatal (_("error while parsing CSV file: %s\n"),
csv_strerror (csv_error (&p)));
}
}
return ctx.db;
}
int
main (int argc, char *argv[])
{
int ret;
rec_db_t db;
rec_writer_t writer;
recutl_init ("csv2rec");
parse_args (argc, argv);
db = process_csv ();
ret = EXIT_SUCCESS;
if (db)
{
writer = rec_writer_new (stdout);
rec_write_db (writer, db);
rec_writer_destroy (writer);
rec_db_destroy (db);
}
else
{
ret = EXIT_FAILURE;
}
return ret;
}
/* End of csv2rec.c */
|