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author | Jose Antonio Ortega Ruiz <jao@gnu.org> | 2006-03-20 22:46:46 +0000 |
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committer | Jose Antonio Ortega Ruiz <jao@gnu.org> | 2006-03-20 22:46:46 +0000 |
commit | 300160e73da486946ae513f1d039dcd7b85ff17c (patch) | |
tree | f26691ff724b57dac450ab47e4eea91e63cdadc1 /mixlib/mix_src_file.c | |
parent | 50375f34b611281a3b05a37221e2baa143f5f5ca (diff) | |
download | mdk-300160e73da486946ae513f1d039dcd7b85ff17c.tar.gz mdk-300160e73da486946ae513f1d039dcd7b85ff17c.tar.bz2 |
Version 1.2.1 imported1.2.1
git-archimport-id: mdk@sv.gnu.org/mdk--devel--1--patch-1
Diffstat (limited to 'mixlib/mix_src_file.c')
-rw-r--r-- | mixlib/mix_src_file.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/mixlib/mix_src_file.c b/mixlib/mix_src_file.c new file mode 100644 index 0000000..b376643 --- /dev/null +++ b/mixlib/mix_src_file.c @@ -0,0 +1,157 @@ +/* -*-c-*- -------------- mix_src_file.c : + * Implementation of the functions declared in mix_src_file.h + * ------------------------------------------------------------------ + * Last change: Time-stamp: "01/03/10 15:23:46 jose" + * ------------------------------------------------------------------ + * Copyright (C) 2000, 2001 Free Software Foundation, Inc. + * + * 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 2 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include <ctype.h> +#include <string.h> +#include <stdio.h> +#include <unistd.h> +#include "mix_src_file.h" + +/* the MIXAL source file type */ +struct mix_src_file_t +{ + gchar *path; /* the path to the disk file */ + GPtrArray *lines; /* an array of the file lines */ + guint lineno; /* the number of lines */ +}; + +/* format a source line */ +static gchar * +format_line_ (gchar *line) +{ + const gchar *label, *op, *rest; + gint k = 0; + + if (!line) return line; + if (line[0] == '*' || strlen(line) == 0) + return g_strdup (line); + + if (isspace (line[0])) + { + label = " "; + while (line[k] && isspace (line[k])) ++k; + } + else + { + label = line; + while (line[k] && !isspace (line[k])) ++k; + while (line[k] && isspace (line[k])) ++k; + } + + if (line[k]) + { + line[k - 1] = 0; + op = line + k; + while (line[k] && !isspace (line[k])) ++k; + while (line[k] && isspace (line[k])) ++k; + line[k - 1] = 0; + rest = (line[k]) ? line + k: ""; + } + else + { + op = rest = ""; + } + + + return g_strdup_printf ("%-11s %-5s %s", label, op, rest); +} + +/* load the source file lines into memory */ +static gboolean +load_file_ (mix_src_file_t *file) +{ + mix_file_t *mf = mix_file_new_with_def_ext (file->path, + mix_io_READ, + MIX_SRC_DEFEXT); + if (mf != NULL) + { + enum {BUFFER_SIZE = 256}; + static gchar BUFFER[BUFFER_SIZE]; + + FILE *f = mix_file_to_FILE (mf); + file->lines = g_ptr_array_new (); + file->lineno = 0; + + while (fgets (BUFFER, BUFFER_SIZE, f) == BUFFER) + { + g_ptr_array_add (file->lines, (gpointer) format_line_ (BUFFER)); + file->lineno++; + } + + mix_file_delete (mf); + return TRUE; + } + return FALSE; +} + +/* create a new src file from an existing disk file */ +mix_src_file_t * +mix_src_file_new_for_read (const gchar *path) +{ + mix_src_file_t *result = g_new (mix_src_file_t, 1); + result->lines = NULL; + result->path = g_strdup (path); + result->lineno = 0; + return result; +} + +/* destroy a src file object */ +void +mix_src_file_delete (mix_src_file_t *src) +{ + g_return_if_fail (src != NULL); + if (src->lines) g_ptr_array_free (src->lines, TRUE); + g_free (src->path); + g_free (src); +} + +/* get the source file path */ +const gchar * +mix_src_file_get_path (const mix_src_file_t *src) +{ + g_return_val_if_fail (src != NULL, NULL); + return src->path; +} + +/* get a given line of the source file */ +const gchar * +mix_src_file_get_line (const mix_src_file_t *src, guint lineno) +{ + g_return_val_if_fail (src != NULL, NULL); + if (src->lines == NULL && !load_file_ ((mix_src_file_t*)src)) + return NULL; + if (lineno > src->lineno || lineno == 0) + return NULL; + return (gchar *)g_ptr_array_index (src->lines, lineno - 1); +} + +/* get the total no. of lines in the file */ +guint +mix_src_file_get_line_no (const mix_src_file_t *src) +{ + g_return_val_if_fail (src != NULL, 0); + if (src->lines == NULL && !load_file_ ((mix_src_file_t*)src)) + return 0; + return src->lineno; +} + |