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refactor: Extract get_nth_hash_section() and use 0-based indexing.

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From `get_current_nth_hash_section` `get_nth_hash_section()` is
extracted to allow for reuse for any hash. The indexing is also changed
to 0-based and negative indexing also works now.

This is a prep commit for the next, where `get_nth_hash_section()` will
be used in a new function with negative indexing.
This commit is contained in:
N-Shar-ma
2024-01-27 03:47:49 +05:30
committed by Tim Abbott
parent 706be812b9
commit 727774a0e5
3 changed files with 15 additions and 16 deletions
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15
web/src/hash_parser.ts
View File

@@ -15,16 +15,15 @@ export function get_hash_section(hash?: string): string {
return parts[1] || "";
}
export function get_current_nth_hash_section(n: number): string {
const hash = window.location.hash;
// given "#settings/profile" and n=2, returns "profile"
// given '#streams/5/social" and n=3, returns "social"
function get_nth_hash_section(hash: string, n: number): string {
// given "#settings/profile" and n=1, returns "profile"
// given '#streams/5/social" and n=2, returns "social"
const parts = hash.replace(/\/$/, "").split(/\//);
if (parts.length < n) {
return "";
}
return parts.at(n) ?? "";
}
return parts[n - 1] || "";
export function get_current_nth_hash_section(n: number): string {
return get_nth_hash_section(window.location.hash, n);
}
export function get_current_hash_category(): string {

4
web/src/hashchange.js
View File

@@ -253,7 +253,7 @@ function do_hashchange_overlay(old_hash) {
if (coming_from_overlay && base === old_base) {
if (base === "streams") {
// e.g. #streams/29/social/subscribers
const right_side_tab = hash_parser.get_current_nth_hash_section(4);
const right_side_tab = hash_parser.get_current_nth_hash_section(3);
stream_settings_ui.change_state(section, right_side_tab);
return;
}
@@ -320,7 +320,7 @@ function do_hashchange_overlay(old_hash) {
if (base === "streams") {
// e.g. #streams/29/social/subscribers
const right_side_tab = hash_parser.get_current_nth_hash_section(4);
const right_side_tab = hash_parser.get_current_nth_hash_section(3);
stream_settings_ui.launch(section, right_side_tab);
return;
}

12
web/tests/hash_util.test.js
View File

@@ -77,14 +77,14 @@ run_test("test_get_hash_section", () => {
run_test("get_current_nth_hash_section", () => {
window.location.hash = "#settings/profile";
assert.equal(hash_parser.get_current_nth_hash_section(1), "#settings");
assert.equal(hash_parser.get_current_nth_hash_section(2), "profile");
assert.equal(hash_parser.get_current_nth_hash_section(0), "#settings");
assert.equal(hash_parser.get_current_nth_hash_section(1), "profile");
window.location.hash = "#settings/10/general";
assert.equal(hash_parser.get_current_nth_hash_section(1), "#settings");
assert.equal(hash_parser.get_current_nth_hash_section(2), "10");
assert.equal(hash_parser.get_current_nth_hash_section(3), "general");
assert.equal(hash_parser.get_current_nth_hash_section(4), "");
assert.equal(hash_parser.get_current_nth_hash_section(0), "#settings");
assert.equal(hash_parser.get_current_nth_hash_section(1), "10");
assert.equal(hash_parser.get_current_nth_hash_section(2), "general");
assert.equal(hash_parser.get_current_nth_hash_section(3), "");
});
run_test("build_reload_url", () => {