Diffstat (limited to 'ui-diff.c')
| -rw-r--r-- | ui-diff.c | 177 |
1 files changed, 163 insertions, 14 deletions
@@ -1,11 +1,17 @@ /* ui-diff.c: show diff between two blobs * * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com> + * Copyright (C) 2026 Saya Andy <saya.andy@posteo.com> + * + * Modified 2026 by Saya Andy: + * Select variable refs from web ui for diff * * Licensed under GNU General Public License v2 * (see COPYING for full license text) */ +#define USE_THE_REPOSITORY_VARIABLE + #include "cgit.h" #include "ui-diff.h" #include "html.h" @@ -258,8 +264,8 @@ static void header(const struct object_id *oid1, char *path1, int mode1, htmlf("<br/>deleted file mode %.6o", mode1); if (!subproject) { - abbrev1 = xstrdup(find_unique_abbrev(oid1, DEFAULT_ABBREV)); - abbrev2 = xstrdup(find_unique_abbrev(oid2, DEFAULT_ABBREV)); + abbrev1 = xstrdup(repo_find_unique_abbrev(the_repository, oid1, DEFAULT_ABBREV)); + abbrev2 = xstrdup(repo_find_unique_abbrev(the_repository, oid2, DEFAULT_ABBREV)); htmlf("<br/>index %s..%s", abbrev1, abbrev2); free(abbrev1); free(abbrev2); @@ -334,16 +340,145 @@ static void filepair_cb(struct diff_filepair *pair) cgit_ssdiff_footer(); } +static int print_ref_option(const struct reference *ref, void *cb_data) +{ + const char **sel = (const char **)cb_data; + + html_option(ref->name, ref->name, sel[0]); + return 0; +} + +static void cgit_print_ref_select(const char *name, const char *selected) +{ + /* + * Offer every branch and tag so that any two refs can be compared. + */ + html("<select name='"); + html_attr(name); + html("' onchange='this.form.submit();'>"); + refs_for_each_branch_ref(get_main_ref_store(the_repository), + print_ref_option, (void *)&selected); + if (ctx.repo->enable_remote_branches) + refs_for_each_remote_ref(get_main_ref_store(the_repository), + print_ref_option, (void *)&selected); + refs_for_each_tag_ref(get_main_ref_store(the_repository), + print_ref_option, (void *)&selected); + html("</select>"); +} + +/* + * The number of commits to step back from the selected ref, so that any + * ancestor of a branch or tag can be picked without typing a rev into + * the url by hand. + */ +static void cgit_print_ref_offset(const char *name, int value) +{ + html(" <input type='text' size='2' name='"); + html_attr(name); + html("' title='N commits back from the selected ref'"); + if (value) + htmlf(" value='%d'", value); + html("> <span class='hint'>back</span>"); +} + void cgit_print_diff_ctrls(void) { int i, curr; + html("<form class='diff-ctrls' method='get'>"); + /* + * Emit the same hidden fields as cgit_add_hidden_formfields(), except + * id/id2, which are carried by the ref-picker selects below. One + * form wraps both panels so any submission carries all controls. + */ + if (!ctx.cfg.virtual_root) { + struct strbuf url = STRBUF_INIT; + strbuf_addf(&url, "%s/%s", ctx.qry.repo, ctx.qry.page); + if (ctx.qry.vpath) + strbuf_addf(&url, "/%s", ctx.qry.vpath); + html_hidden("url", url.buf); + strbuf_release(&url); + } + if (ctx.qry.head && ctx.repo->defbranch && + strcmp(ctx.qry.head, ctx.repo->defbranch)) + html_hidden("h", ctx.qry.head); + if (ctx.qry.showmsg) + html_hidden("showmsg", "1"); + + html("<div class='cgit-panel'>"); + html("<b>diff refs</b>"); + html("<table>"); + html("<tr><td colspan='2'/></tr>"); + + /* ref pickers: compare any two refs (branches/tags) */ + { + const char *new_ref = ctx.qry.oid && *ctx.qry.oid ? + ctx.qry.oid : ctx.qry.head; + const char *old_ref = ctx.qry.oid2; + + html("<tr>"); + html("<td class='label'>from:</td>"); + html("<td class='ctrl'>"); + cgit_print_ref_select("id2", old_ref); + cgit_print_ref_offset("id2off", ctx.qry.id2off); + html("</td></tr><tr>"); + html("<td class='label'>to:</td>"); + html("<td class='ctrl'>"); + cgit_print_ref_select("id", new_ref); + cgit_print_ref_offset("idoff", ctx.qry.idoff); + html("</td></tr>"); + + html("<tr><td/><td class='ctrl'>"); + html("<input type='submit' value='apply'>"); + html(" | "); + { + const char *flip_new_ref; + int flip_idoff; + int idoff = ctx.qry.idoff; + int id2off = ctx.qry.id2off; + + if (old_ref && *old_ref) { + /* explicit from ref */ + flip_new_ref = old_ref; + flip_idoff = id2off; + } else if (!is_null_oid(old_rev_oid)) { + /* + * The from rev is the parent of the (stepped) + * to rev, i.e. new_ref~(idoff+1); keep the + * ref name in the url instead of a materialized + * parent sha. + */ + flip_new_ref = new_ref; + flip_idoff = idoff + 1; + } else { + /* root: no from rev to flip to */ + flip_new_ref = NULL; + flip_idoff = 0; + } + + /* + * cgit_diff_link() emits the offsets from ctx.qry; + * swap them around the call so they follow the refs. + */ + ctx.qry.idoff = flip_idoff; + ctx.qry.id2off = idoff; + cgit_diff_link("flip", "swap from and to", "button", + ctx.qry.head, + flip_new_ref, new_ref, + ctx.qry.path); + ctx.qry.idoff = idoff; + ctx.qry.id2off = id2off; + } + html("</td></tr>"); + } + html("</table>"); + html("</div>"); + html("<div class='cgit-panel'>"); html("<b>diff options</b>"); - html("<form method='get'>"); - cgit_add_hidden_formfields(1, 0, ctx.qry.page); html("<table>"); html("<tr><td colspan='2'/></tr>"); + html("<tr>"); html("<td class='label'>context:</td>"); html("<td class='ctrl'>"); @@ -377,8 +512,8 @@ void cgit_print_diff_ctrls(void) html("<tr><td/><td class='ctrl'>"); html("<noscript><input type='submit' value='reload'/></noscript>"); html("</td></tr></table>"); - html("</form>"); html("</div>"); + html("</form>"); } void cgit_print_diff(const char *new_rev, const char *old_rev, @@ -386,6 +521,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, { struct commit *commit, *commit2; const struct object_id *old_tree_oid, *new_tree_oid; + struct strbuf new_refbuf = STRBUF_INIT, old_refbuf = STRBUF_INIT; diff_type difftype; /* @@ -393,30 +529,43 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, * entire commit to detect renames so we must limit the paths in our * own callbacks and not pass the prefix to the diff machinery. */ - if (ctx.qry.follow && ctx.cfg.enable_follow_links) { + if (ctx.qry.follow && ctx.repo->enable_follow_links) { current_prefix = prefix; prefix = ""; } else { current_prefix = NULL; } - if (!new_rev) + /* + * An empty rev is the same as no rev; a zero offset means the ref + * itself. + */ + if (!new_rev || !*new_rev) new_rev = ctx.qry.head; - if (get_oid(new_rev, new_rev_oid)) { + if (ctx.qry.idoff) { + strbuf_addf(&new_refbuf, "%s~%d", new_rev, ctx.qry.idoff); + new_rev = new_refbuf.buf; + } + if (repo_get_oid(the_repository, new_rev, new_rev_oid)) { cgit_print_error_page(404, "Not found", "Bad object name: %s", new_rev); return; } commit = lookup_commit_reference(the_repository, new_rev_oid); - if (!commit || parse_commit(commit)) { + if (!commit || repo_parse_commit(the_repository, commit)) { cgit_print_error_page(404, "Not found", "Bad commit: %s", oid_to_hex(new_rev_oid)); return; } new_tree_oid = get_commit_tree_oid(commit); - if (old_rev) { - if (get_oid(old_rev, old_rev_oid)) { + if (old_rev && *old_rev) { + if (ctx.qry.id2off) { + strbuf_addf(&old_refbuf, "%s~%d", old_rev, + ctx.qry.id2off); + old_rev = old_refbuf.buf; + } + if (repo_get_oid(the_repository, old_rev, old_rev_oid)) { cgit_print_error_page(404, "Not found", "Bad object name: %s", old_rev); return; @@ -424,12 +573,12 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, } else if (commit->parents && commit->parents->item) { oidcpy(old_rev_oid, &commit->parents->item->object.oid); } else { - oidclr(old_rev_oid); + oidclr(old_rev_oid, the_repository->hash_algo); } if (!is_null_oid(old_rev_oid)) { commit2 = lookup_commit_reference(the_repository, old_rev_oid); - if (!commit2 || parse_commit(commit2)) { + if (!commit2 || repo_parse_commit(the_repository, commit2)) { cgit_print_error_page(404, "Not found", "Bad commit: %s", oid_to_hex(old_rev_oid)); return; @@ -442,7 +591,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, if (raw) { struct diff_options diffopt; - diff_setup(&diffopt); + repo_diff_setup(the_repository, &diffopt); diffopt.output_format = DIFF_FORMAT_PATCH; diffopt.flags.recursive = 1; diff_setup_done(&diffopt); |