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ffdcb7cfeb
Require <caml/unixsupport.h> (an OCaml header file) and remove alternate defintions of ‘Nothing’ and ‘unix_error’ which are defined in this header file. We require OCaml >= 3.11 which has this header file, so there is no need to test for it or provide alternative definitions. Thanks: Pino Toscano.
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/* virt-builder
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* Copyright (C) 2013 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* This file handles the interface between the C/lex/yacc index file
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* parser, and the OCaml world. See F<builder/index_parser.ml> for
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* the OCaml type definition.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <caml/alloc.h>
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#include <caml/fail.h>
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#include <caml/memory.h>
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#include <caml/mlvalues.h>
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#include <caml/unixsupport.h>
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#include "index-struct.h"
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#include "index-parse.h"
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extern int do_parse (struct parse_context *context, FILE *in);
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extern value virt_builder_parse_index (value progv, value error_suffixv, value filenamev);
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value
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virt_builder_parse_index (value progv, value error_suffixv, value filenamev)
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{
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CAMLparam2 (progv, filenamev);
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CAMLlocal5 (rv, v, sv, sv2, fv);
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struct section *sections;
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size_t i, nr_sections;
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struct parse_context context;
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FILE *in;
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parse_context_init (&context);
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context.progname = String_val (progv);
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context.input_file = String_val (filenamev);
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context.error_suffix = String_val (error_suffixv);
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in = fopen (String_val (filenamev), "r");
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if (in == NULL)
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unix_error (errno, (char *) "fopen", filenamev);
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if (do_parse (&context, in) != 0) {
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fclose (in);
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caml_invalid_argument ("parse error");
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}
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if (fclose (in) == EOF)
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unix_error (errno, (char *) "fclose", filenamev);
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/* Convert the parsed data to OCaml structures. */
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nr_sections = 0;
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for (sections = context.parsed_index; sections != NULL; sections = sections->next)
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nr_sections++;
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rv = caml_alloc (nr_sections, 0);
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for (i = 0, sections = context.parsed_index; sections != NULL;
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i++, sections = sections->next) {
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struct field *fields;
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size_t j, nr_fields;
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nr_fields = 0;
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for (fields = sections->fields; fields != NULL; fields = fields->next)
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nr_fields++;
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fv = caml_alloc (nr_fields, 0);
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for (j = 0, fields = sections->fields; fields != NULL;
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j++, fields = fields->next) {
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v = caml_alloc_tuple (3);
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sv = caml_copy_string (fields->key);
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Store_field (v, 0, sv); /* (key, Some subkey, value) */
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if (fields->subkey) {
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sv2 = caml_copy_string (fields->subkey);
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sv = caml_alloc (1, 0);
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Store_field (sv, 0, sv2);
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} else
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sv = Val_int (0);
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Store_field (v, 1, sv);
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sv = caml_copy_string (fields->value);
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Store_field (v, 2, sv);
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Store_field (fv, j, v); /* assign to return array of fields */
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}
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v = caml_alloc_tuple (2);
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sv = caml_copy_string (sections->name);
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Store_field (v, 0, sv); /* (name, fields) */
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Store_field (v, 1, fv);
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Store_field (rv, i, v); /* assign to return array of sections */
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}
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/* Free parsed data. */
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parse_context_free (&context);
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CAMLreturn (rv);
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}
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