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Reorganise archive extraction code

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This commit is contained in:
Glenn L McGrath
2001-06-13 07:26:39 +00:00
parent dab3d46b9d
commit 9aff903603
11 changed files with 330 additions and 343 deletions
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105
dpkg_deb.c
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@@ -21,33 +21,54 @@
extern int dpkg_deb_main(int argc, char **argv)
{
char *argument = NULL;
char *prefix = NULL;
char *filename = NULL;
char *output_buffer = NULL;
int opt = 0;
int optflag = 0;
int arg_type = 0;
int deb_extract_funct = 0;
const int arg_type_prefix = 1;
const int arg_type_field = 2;
const int arg_type_filename = 4;
// const int arg_type_un_ar_gz = 8;
while ((opt = getopt(argc, argv, "ceftXxI")) != -1) {
switch (opt) {
case 'c':
optflag |= extract_contents;
deb_extract_funct |= extract_data_tar_gz;
deb_extract_funct |= extract_verbose_list;
break;
case 'e':
optflag |= extract_control;
arg_type = arg_type_prefix;
deb_extract_funct |= extract_control_tar_gz;
deb_extract_funct |= extract_all_to_fs;
break;
case 'f':
optflag |= extract_field;
arg_type = arg_type_field;
deb_extract_funct |= extract_control_tar_gz;
deb_extract_funct |= extract_one_to_buffer;
filename = xstrdup("./control");
break;
case 't':
optflag |= extract_fsys_tarfile;
case 't': /* --fsys-tarfile, i just made up this short name */
/* Integrate the functionality needed with some code from ar.c */
error_msg_and_die("Option disabled");
// arg_type = arg_type_un_ar_gz;
break;
case 'X':
optflag |= extract_verbose_extract;
break;
arg_type = arg_type_prefix;
deb_extract_funct |= extract_data_tar_gz;
deb_extract_funct |= extract_all_to_fs;
deb_extract_funct |= extract_list;
case 'x':
optflag |= extract_extract;
arg_type = arg_type_prefix;
deb_extract_funct |= extract_data_tar_gz;
deb_extract_funct |= extract_all_to_fs;
break;
case 'I':
optflag |= extract_info;
arg_type = arg_type_filename;
deb_extract_funct |= extract_control_tar_gz;
deb_extract_funct |= extract_one_to_buffer;
break;
default:
show_usage();
@@ -58,48 +79,42 @@ extern int dpkg_deb_main(int argc, char **argv)
show_usage();
}
switch (optflag) {
case (extract_control):
case (extract_extract):
case (extract_verbose_extract):
/* argument is a dir name */
if ( (optind + 1) == argc ) {
argument = xstrdup("DEBIAN");
} else {
argument = xstrdup(argv[optind + 1]);
/* Workout where to extract the files */
if (arg_type == arg_type_prefix) {
/* argument is a dir name */
if ((optind + 1) == argc ) {
prefix = xstrdup("./DEBIAN/");
} else {
prefix = (char *) xmalloc(strlen(argv[optind + 1]) + 2);
strcpy(prefix, argv[optind + 1]);
/* Make sure the directory has a trailing '/' */
if (last_char_is(prefix, '/') == NULL) {
strcat(prefix, "/");
}
break;
case (extract_field):
/* argument is a control field name */
if ((optind + 1) != argc) {
argument = xstrdup(argv[optind + 1]);
}
break;
case (extract_info):
/* argument is a control field name */
if ((optind + 1) != argc) {
argument = xstrdup(argv[optind + 1]);
break;
} else {
error_msg("-I currently requires a filename to be specifies");
return(EXIT_FAILURE);
}
/* argument is a filename */
default:
}
}
output_buffer = deb_extract(argv[optind], optflag, argument, NULL);
if (arg_type == arg_type_filename) {
if ((optind + 1) != argc) {
filename = xstrdup(argv[optind + 1]);
} else {
error_msg_and_die("-I currently requires a filename to be specified");
}
}
if (optflag & extract_field) {
output_buffer = deb_extract(argv[optind], stdout, deb_extract_funct, prefix, filename);
if ((arg_type == arg_type_filename) && (output_buffer != NULL)) {
puts(output_buffer);
}
else if (arg_type == arg_type_field) {
char *field = NULL;
int field_length = 0;
int field_start = 0;
while ((field = read_package_field(&output_buffer[field_start])) != NULL) {
field_length = strlen(field);
field_start += (field_length + 1);
if (strstr(field, argument) == field) {
puts(field + strlen(argument) + 2);
field_start += (strlen(field) + 1);
if (strstr(field, argv[optind + 1]) == field) {
puts(field + strlen(argv[optind + 1]) + 2);
}
free(field);
}