[pacman-dev] [PATCH v3 2/2] Add -F --machinereable option
Andrew Gregory
andrew.gregory.8 at gmail.com
Fri Oct 30 17:59:53 UTC 2015
On 10/27/15 at 11:24pm, Florian Pritz wrote:
> Signed-off-by: Florian Pritz <bluewind at xinu.at>
> ---
>
> v3:
> - Change output format to use \0 as field separator.
> - Only output one repo for -Fl
> - Combine else if
> - Fix incorrect placement of FREELIST(match)
>
> doc/pacman.8.txt | 5 +++++
> src/pacman/conf.h | 2 ++
> src/pacman/files.c | 46 ++++++++++++++++++++++++++++++++++++++++------
> src/pacman/pacman.c | 6 ++++++
> 4 files changed, 53 insertions(+), 6 deletions(-)
Aside from a few style nitpicks, the code looks fine. I am curious as
to the motivation for this though. Most of our operations are made
easier to parse by using --quiet to reduce the output to a single
field. Do you have a use case in mind for this that wouldn't be taken
care of by adding a --quiet option to -F or intend to add
--machinereadable to other operations?
> diff --git a/doc/pacman.8.txt b/doc/pacman.8.txt
> index 57929b4..1df7980 100644
> --- a/doc/pacman.8.txt
> +++ b/doc/pacman.8.txt
> @@ -477,6 +477,11 @@ The '--list', '--search' and '--owns' options are exclusive and can not be combi
> *-o <file>, \--owns<file>*::
> Search for packages that own a particular file.
>
> +*--machinereadable*::
> + Use a machine readable output format for '--list', '--search' and
> + '--owns'. The format is 'repository\0pkgname\0pkgver\0path\n' with '\0'
> + being the NULL character and '\n' a linefeed.
> +
>
> Handling Config Files[[HCF]]
> ----------------------------
> diff --git a/src/pacman/conf.h b/src/pacman/conf.h
> index cde6741..7a7e9cf 100644
> --- a/src/pacman/conf.h
> +++ b/src/pacman/conf.h
> @@ -90,6 +90,7 @@ typedef struct __config_t {
> unsigned short op_s_upgrade;
>
> unsigned short op_f_regex;
> + unsigned short op_f_machinereadable;
>
> unsigned short group;
> unsigned short noask;
> @@ -192,6 +193,7 @@ enum {
> OP_RECURSIVE,
> OP_SEARCH,
> OP_REGEX,
> + OP_MACHINEREADABLE,
> OP_UNREQUIRED,
> OP_UPGRADES,
> OP_SYSUPGRADE,
> diff --git a/src/pacman/files.c b/src/pacman/files.c
> index 31ce9e0..18fd763 100644
> --- a/src/pacman/files.c
> +++ b/src/pacman/files.c
> @@ -27,6 +27,25 @@
> #include "conf.h"
> #include "package.h"
>
> +static void print_line_machinereadable(alpm_db_t *db, alpm_pkg_t *pkg, char *filename) {
Opening brace on its own line.
> + // Fields are repo, pkgname, pkgver, filename separated with \0
C89-style comment.
> + fputs(alpm_db_get_name(db), stdout);
> + fputc(0, stdout);
> + fputs(alpm_pkg_get_name(pkg), stdout);
> + fputc(0, stdout);
> + fputs(alpm_pkg_get_version(pkg), stdout);
> + fputc(0, stdout);
> + fputs(filename, stdout);
> + fputs("\n", stdout);
> +}
> +
> +static void dump_pkg_machinereadable(alpm_db_t *db, alpm_pkg_t *pkg) {
Opening brace on its own line.
> + alpm_filelist_t *pkgfiles = alpm_pkg_get_files(pkg);
> + for(size_t filenum = 0; filenum < pkgfiles->count; filenum++) {
> + const alpm_file_t *file = pkgfiles->files + filenum;
> + print_line_machinereadable(db, pkg, file->name);
> + }
> +}
>
> static int files_fileowner(alpm_list_t *syncs, alpm_list_t *targets) {
> int ret = 0;
> @@ -59,8 +78,9 @@ static int files_fileowner(alpm_list_t *syncs, alpm_list_t *targets) {
> alpm_filelist_t *files = alpm_pkg_get_files(pkg);
>
> if(alpm_filelist_contains(files, f)) {
> -
> - if(!config->quiet) {
> + if(config->op_f_machinereadable) {
> + print_line_machinereadable(repo, pkg, f);
> + } else if(!config->quiet) {
> printf(_("%s is owned by %s/%s %s\n"), f,
> alpm_db_get_name(repo), alpm_pkg_get_name(pkg),
> alpm_pkg_get_version(pkg));
> @@ -137,7 +157,13 @@ static int files_search(alpm_list_t *syncs, alpm_list_t *targets, int regex) {
> }
>
> if(match != NULL) {
> - if(config->quiet) {
> + if(config->op_f_machinereadable) {
> + alpm_list_t *ml;
> + for(ml = match; ml; ml = alpm_list_next(ml)) {
> + char *filename = ml->data;
> + print_line_machinereadable(repo, pkg, filename);
> + }
> + } else if(config->quiet) {
> printf("%s/%s\n", alpm_db_get_name(repo), alpm_pkg_get_name(pkg));
> } else {
> alpm_list_t *ml;
> @@ -149,8 +175,8 @@ static int files_search(alpm_list_t *syncs, alpm_list_t *targets, int regex) {
> c = ml->data;
> printf(" %s\n", c);
> }
> - FREELIST(match);
> }
> + FREELIST(match);
> }
> }
> }
> @@ -222,7 +248,11 @@ static int files_list(alpm_list_t *syncs, alpm_list_t *targets) {
>
> if((pkg = alpm_db_get_pkg(db, targ)) != NULL) {
> found = 1;
> - dump_file_list(pkg);
> + if(config->op_f_machinereadable) {
> + dump_pkg_machinereadable(db, pkg);
> + } else {
> + dump_file_list(pkg);
> + }
> break;
> }
> }
> @@ -240,7 +270,11 @@ static int files_list(alpm_list_t *syncs, alpm_list_t *targets) {
>
> for(j = alpm_db_get_pkgcache(db); j; j = alpm_list_next(j)) {
> alpm_pkg_t *pkg = j->data;
> - dump_file_list(pkg);
> + if(config->op_f_machinereadable) {
> + dump_pkg_machinereadable(db, pkg);
> + } else {
> + dump_file_list(pkg);
> + }
> }
> }
> }
> diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c
> index d777663..ad90ee6 100644
> --- a/src/pacman/pacman.c
> +++ b/src/pacman/pacman.c
> @@ -181,6 +181,8 @@ static void usage(int op, const char * const myname)
> addlist(_(" -x, --regex enable searching using regular expressions\n"));
> addlist(_(" -y, --refresh download fresh package databases from the server\n"
> " (-yy to force a refresh even if up to date)\n"));
> + addlist(_(" --machinereadable\n"
> + " produce machine-readable output\n"));
> }
> switch(op) {
> case PM_OP_SYNC:
> @@ -796,6 +798,9 @@ static int parsearg_files(int opt)
> case 'x':
> config->op_f_regex = 1;
> break;
> + case OP_MACHINEREADABLE:
> + config->op_f_machinereadable = 1;
> + break;
> case OP_QUIET:
> case 'q':
> config->quiet = 1;
> @@ -945,6 +950,7 @@ static int parseargs(int argc, char *argv[])
> {"recursive", no_argument, 0, OP_RECURSIVE},
> {"search", no_argument, 0, OP_SEARCH},
> {"regex", no_argument, 0, OP_REGEX},
> + {"machinereadable", no_argument, 0, OP_MACHINEREADABLE},
> {"unrequired", no_argument, 0, OP_UNREQUIRED},
> {"upgrades", no_argument, 0, OP_UPGRADES},
> {"sysupgrade", no_argument, 0, OP_SYSUPGRADE},
> --
> 2.6.2
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