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fetch: added --link/-L option 

fixes #42

This will also fix a bug that left an empty file in destination dir when
source file did not exist in repository.

There are still issues with paths longer than 255 chars.
cute-signatures
Natanael Copa 2009-06-09 11:06:22 +02:00
parent 9c4fdf9ead
commit 50cdcca833
1 changed files with 33 additions and 19 deletions
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52
src/fetch.c
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@ -12,6 +12,7 @@
#include <stdio.h> #include <stdio.h>
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h> #include <unistd.h>
#include <errno.h>
#include "apk_applet.h" #include "apk_applet.h"
#include "apk_database.h" #include "apk_database.h"
@ -20,6 +21,7 @@
#define FETCH_RECURSIVE 1 #define FETCH_RECURSIVE 1
#define FETCH_STDOUT 2 #define FETCH_STDOUT 2
#define FETCH_LINK 4
struct fetch_ctx { struct fetch_ctx {
unsigned int flags; unsigned int flags;
@ -37,6 +39,9 @@ static int fetch_parse(void *ctx, int optch, int optindex, const char *optarg)
case 's': case 's':
fctx->flags |= FETCH_STDOUT; fctx->flags |= FETCH_STDOUT;
break; break;
case 'L':
fctx->flags |= FETCH_LINK;
break;
case 'o': case 'o':
fctx->outdir = optarg; fctx->outdir = optarg;
break; break;
@ -51,29 +56,22 @@ static int fetch_package(struct fetch_ctx *fctx,
struct apk_package *pkg) struct apk_package *pkg)
{ {
struct apk_istream *is; struct apk_istream *is;
char file[256]; char infile[256];
char outfile[256];
int i, r, fd; int i, r, fd;
if (fctx->flags & FETCH_STDOUT) { printf("DEBUG: hello\n");
fd = STDOUT_FILENO; if (!(fctx->flags & FETCH_STDOUT)) {
} else {
struct apk_file_info fi; struct apk_file_info fi;
snprintf(file, sizeof(file), "%s/%s-%s.apk", snprintf(outfile, sizeof(outfile), "%s/%s-%s.apk",
fctx->outdir ? fctx->outdir : ".", fctx->outdir ? fctx->outdir : ".",
pkg->name->name, pkg->version); pkg->name->name, pkg->version);
if (apk_file_get_info(file, &fi) == 0 && if (apk_file_get_info(outfile, &fi) == 0 &&
fi.size == pkg->size) fi.size == pkg->size)
return 0; return 0;
fd = creat(file, 0644);
if (fd < 0) {
apk_error("Unable to create '%s'", file);
return -1;
}
} }
apk_message("Downloading %s-%s", pkg->name->name, pkg->version); apk_message("Downloading %s-%s", pkg->name->name, pkg->version);
for (i = 0; i < APK_MAX_REPOS; i++) for (i = 0; i < APK_MAX_REPOS; i++)
@ -86,11 +84,26 @@ static int fetch_package(struct fetch_ctx *fctx,
return -1; return -1;
} }
snprintf(file, sizeof(file), "%s/%s-%s.apk", snprintf(infile, sizeof(infile), "%s/%s-%s.apk",
db->repos[i].url, pkg->name->name, pkg->version); db->repos[i].url, pkg->name->name, pkg->version);
is = apk_istream_from_url(file);
if (fctx->flags & FETCH_STDOUT) {
fd = STDOUT_FILENO;
} else {
if ((fctx->flags & FETCH_LINK) && apk_url_local_file(infile)) {
if (link(infile, outfile) == 0)
return 0;
}
fd = creat(outfile, 0644);
if (fd < 0) {
apk_error("%s: %s", outfile, strerror(errno));
return -1;
}
}
is = apk_istream_from_url(infile);
if (is == NULL) { if (is == NULL) {
apk_error("Unable to download '%s'", file); apk_error("Unable to download '%s'", infile);
return -1; return -1;
} }
@ -99,8 +112,8 @@ static int fetch_package(struct fetch_ctx *fctx,
if (fd != STDOUT_FILENO) if (fd != STDOUT_FILENO)
close(fd); close(fd);
if (r != pkg->size) { if (r != pkg->size) {
apk_error("Unable to download '%s'", file); apk_error("Unable to download '%s'", infile);
unlink(file); unlink(outfile);
return -1; return -1;
} }
@ -171,12 +184,13 @@ err:
static struct option fetch_options[] = { static struct option fetch_options[] = {
{ "recursive", no_argument, NULL, 'R' }, { "recursive", no_argument, NULL, 'R' },
{ "stdout", no_argument, NULL, 's' }, { "stdout", no_argument, NULL, 's' },
{ "link", no_argument, NULL, 'L' },
{ "output", required_argument, NULL, 'o' }, { "output", required_argument, NULL, 'o' },
}; };
static struct apk_applet apk_fetch = { static struct apk_applet apk_fetch = {
.name = "fetch", .name = "fetch",
.usage = "[-R|--recursive|--stdout] [-o dir] apkname...", .usage = "[-R|--recursive|--stdout] [--link|-L] [-o dir] apkname...",
.context_size = sizeof(struct fetch_ctx), .context_size = sizeof(struct fetch_ctx),
.num_options = ARRAY_SIZE(fetch_options), .num_options = ARRAY_SIZE(fetch_options),
.options = fetch_options, .options = fetch_options,