On 10/27/15 at 11:24pm, Florian Pritz wrote:
> Signed-off-by: Florian Pritz <[email protected]>
> ---
> 
> 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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