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Diffstat (limited to 'docs/configuration.md')
| -rw-r--r-- | docs/configuration.md | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/docs/configuration.md b/docs/configuration.md index e07227a..c2261c0 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -18,7 +18,8 @@ values for the current run. | `IMAGE_JOBS` | `3` | Parallel jobs for image processing and HTML template rendering. Positive integer. | | `IMAGEMAGICK_TIMEOUT` | `60` | Per-ImageMagick-command timeout in seconds. Positive integer. | | `TAR_TIMEOUT` | `120` | Tarball creation timeout in seconds. Positive integer. | -| `SHUFFLE` | `no` | Randomly shuffle all previews. `yes`/`no`. | +| `CHRONOLOGICAL_ORDER` | `no` | Order the main album's photos chronologically by EXIF date taken (ascending), falling back to source mtime when a photo has no usable EXIF date. `yes`/`no`. Takes precedence over `SHUFFLE` when both are set. See "Photo ordering" below. | +| `SHUFFLE` | `no` | Randomly shuffle all previews. `yes`/`no`. Ignored when `CHRONOLOGICAL_ORDER=yes`. | | `SPLASH_PAGE` | `yes` | Generate a splash landing page at `index.html`. `yes`/`no`. | | `DETAILS_PAGE` | `yes` | Generate each photo's `*-details.html` page (and its "Details" link). `yes`/`no`. See "Details pages" below. | | `STATS_PAGE` | `no` | Generate the EXIF stats site under `stats/`. `yes`/`no`. | @@ -65,6 +66,26 @@ does not leave stale `*-details.html` files behind: generation stages the new output in a fresh directory and atomically replaces `DIST_DIR`, so files an older generation wrote but the current run does not produce are naturally gone. +## Photo ordering + +By default the main album's photos are listed in plain filename order, or in a +random/seeded shuffle when `SHUFFLE=yes` (see [generation.md](generation.md) +for reproducibility). Set `CHRONOLOGICAL_ORDER=yes` (or pass `--chronological`) +to instead order them chronologically by EXIF date taken (ascending), reusing +the same `DateTimeOriginal` -> `DateTimeDigitized` -> `DateTime` tag fallback +chain, and the same per-photo EXIF cache, as the "Taken:" tooltip field and the +details page. A photo with none of those three tags falls back to its source +file's modification time, so ordering is always fully deterministic and never +crashes on EXIF-less photos (screenshots, downloaded images, ...); photos with +a real EXIF date always sort before mtime-fallback photos, so an approximate +fallback never displaces a genuine timestamp. + +**`CHRONOLOGICAL_ORDER` takes precedence over `SHUFFLE`** when both are set to +`yes`: a chronological album is meant to read as a timeline, so an enabled +shuffle is silently ignored rather than re-scrambling it. This is a config-level +choice, not a validation error, so toggling `SHUFFLE` while experimenting does +not require also touching `CHRONOLOGICAL_ORDER`. + ## Supported source images Only regular files found directly in `INCOMING_DIR` (not in subdirectories) with @@ -84,8 +105,9 @@ The checks (details in `src/lib/config.validate.source.sh`): `IMAGEMAGICK_TIMEOUT`, `TAR_TIMEOUT`; `HEIGHT` is an optional positive integer. * **Percentage (0-100 integer)**: `THUMB_SUBDIVIDE_PERCENT`, `THUMB_FEATURE_PERCENT`. -* **`yes`/`no` settings**: `SHUFFLE`, `SPLASH_PAGE`, `DETAILS_PAGE`, - `STATS_PAGE`, `TARBALL_INCLUDE`, `SYNC_DELETE` (where applicable). +* **`yes`/`no` settings**: `CHRONOLOGICAL_ORDER`, `SHUFFLE`, `SPLASH_PAGE`, + `DETAILS_PAGE`, `STATS_PAGE`, `TARBALL_INCLUDE`, `SYNC_DELETE` (where + applicable). * **Readable input**: `INCOMING_DIR` must be a readable directory; `TEMPLATE_DIR` must be a readable directory containing the required templates (plus `splash` when `SPLASH_PAGE=yes`, and `details` when `DETAILS_PAGE=yes`). @@ -107,9 +129,10 @@ Generation stops before writing album output when validation fails. `CONFIG_SOURCE`, `INCOMING_DIR`, `DIST_DIR`, `TEMPLATE_DIR`, `FAVICON`, `SOURCE_URL`, `TITLE`, `HEIGHT`, `THUMBHEIGHT`, `MAXPREVIEWS`, `THUMB_SUBDIVIDE_PERCENT`, `THUMB_FEATURE_PERCENT`, `IMAGE_JOBS`, -`IMAGEMAGICK_TIMEOUT`, `RANDOM_SEED`, `SHUFFLE`, `SPLASH_PAGE`, `DETAILS_PAGE`, -`STATS_PAGE`, `TARBALL_INCLUDE`, `TARBALL_SUFFIX`, `TAR_TIMEOUT`, `TAR_OPTS`, -`SYNC_DELETE`, `SYNC_DESTINATIONS`, `ORIGINAL_BASEPATH`. +`IMAGEMAGICK_TIMEOUT`, `RANDOM_SEED`, `CHRONOLOGICAL_ORDER`, `SHUFFLE`, +`SPLASH_PAGE`, `DETAILS_PAGE`, `STATS_PAGE`, `TARBALL_INCLUDE`, +`TARBALL_SUFFIX`, `TAR_TIMEOUT`, `TAR_OPTS`, `SYNC_DELETE`, +`SYNC_DESTINATIONS`, `ORIGINAL_BASEPATH`. Scalar values use Bash `%q` quoting; `TAR_OPTS` and `SYNC_DESTINATIONS` are normalized to Bash array assignments, so the output can be parsed by shell |