[PATCH 15/27] [GSOC] cat-file: re-implement --textconv, --filters options
- From
ZheNing Hu via GitGitGadget <gitgitgadget@gmail.com>
- Date
- Aug 13, 2021, 08:22 UTC
- Message-ID
- <898e36a92b778a7ec9dfb4f7780dc2dcf95057c1.1628842990.git.gitgitgadget@gmail.com>
- In-Reply-To
- <pull.1016.git.1628842990.gitgitgadget@gmail.com>
From: ZheNing Hu <adlternative@gmail.com>
After cat-file reuses the ref-filter logic, we re-implement the functions of --textconv and --filters options.
Add members `cat_file_cmdmode` to struct `ref_array_item`, so that struct `batch_option` member `cmdmode` will be passed to ref-filter, and then ref-filter will take use of it to filter the content of the object in get_object().
Use `actual_oi` to record the real expand_data: it may point to the original `oi` or the `act_oi` processed by `textconv_object()` or `convert_to_working_tree()`. `grab_values()` will grab the contents of `actual_oi` and `grab_common_values()` to grab the contents of origin `oi`, this ensures that `%(objectsize)` still uses the size of the unfiltered data.
Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: ZheNing Hu <adlternative@gmail.com> --- builtin/cat-file.c | 2 +- ref-filter.c | 37 +++++++++++++++++++++++++++++++++++-- ref-filter.h | 1 + 3 files changed, 37 insertions(+), 3 deletions(-)
diff --git a/builtin/cat-file.c b/builtin/cat-file.c index 034094dc640..77b470687e1 100644 --- a/builtin/cat-file.c +++ b/builtin/cat-file.c @@ -217,7 +217,7 @@ static void batch_object_write(const char *obj_name, struct expand_data *data) { int ret; - struct ref_array_item item = { data->oid, data->rest }; + struct ref_array_item item = { data->oid, data->rest, opt->cmdmode }; strbuf_reset(scratch); strbuf_reset(err); diff --git a/ref-filter.c b/ref-filter.c index f83b6f83494..f7c448f6fa1 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -1,3 +1,4 @@ +#define USE_THE_INDEX_COMPATIBILITY_MACROS #include "builtin.h" #include "cache.h" #include "parse-options.h" @@ -1759,6 +1760,9 @@ static int get_object(struct ref_array_item *ref, int deref, struct object **obj { /* parse_object_buffer() will set eaten to 0 if free() will be needed */ int eaten = 1; + struct expand_data *actual_oi = oi; + struct expand_data act_oi = {0}; + if (oi->info.contentp) { /* We need to know that to use parse_object_buffer properly */ oi->info.sizep = &oi->size; @@ -1772,19 +1776,47 @@ static int get_object(struct ref_array_item *ref, int deref, struct object **obj BUG("Object size is less than zero."); if (oi->info.contentp) { - *obj = parse_object_buffer(the_repository, &oi->oid, oi->type, oi->size, oi->content, &eaten); + if ((ref->cat_file_cmdmode == 'c' || ref->cat_file_cmdmode == 'w') && !ref->rest) + return strbuf_addf_ret(err, -1, _("missing path for '%s'"), + oid_to_hex(&act_oi.oid)); + if (oi->type == OBJ_BLOB) { + if (ref->cat_file_cmdmode == 'c') { + act_oi = *oi; + if (textconv_object(the_repository, + ref->rest, 0100644, &act_oi.oid, + 1, (char **)(&act_oi.content), &act_oi.size)) + actual_oi = &act_oi; + } else if (ref->cat_file_cmdmode == 'w') { + struct strbuf strbuf = STRBUF_INIT; + struct checkout_metadata meta; + act_oi = *oi; + + init_checkout_metadata(&meta, NULL, NULL, &act_oi.oid); + if (!convert_to_working_tree(&the_index, ref->rest, act_oi.content, act_oi.size, &strbuf, &meta)) + die("could not convert '%s' %s", + oid_to_hex(&oi->oid), ref->rest); + act_oi.size = strbuf.len; + act_oi.content = strbuf_detach(&strbuf, NULL); + actual_oi = &act_oi; + } + } + *obj = parse_object_buffer(the_repository, &actual_oi->oid, actual_oi->type, actual_oi->size, actual_oi->content, &eaten); if (!*obj) { if (!eaten) + free(actual_oi->content); + if (actual_oi != oi) free(oi->content); return strbuf_addf_ret(err, -1, _("parse_object_buffer failed on %s for %s"), oid_to_hex(&oi->oid), ref->refname); } - grab_values(ref->value, deref, *obj, oi); + grab_values(ref->value, deref, *obj, actual_oi); } grab_common_values(ref->value, deref, oi); if (!eaten) free(oi->content); + if (actual_oi != oi) + free(actual_oi->content); return 0; } @@ -2193,6 +2225,7 @@ static struct ref_array_item *new_ref_array_item(const char *refname, FLEX_ALLOC_STR(ref, refname, refname); oidcpy(&ref->objectname, oid); ref->rest = NULL; + ref->cat_file_cmdmode = 0; return ref; } diff --git a/ref-filter.h b/ref-filter.h index ef3d89d73d4..853eb554a5b 100644 --- a/ref-filter.h +++ b/ref-filter.h @@ -39,6 +39,7 @@ struct ref_sorting { struct ref_array_item { struct object_id objectname; const char *rest; + int cat_file_cmdmode; int flag; unsigned int kind; const char *symref;
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