perkeep/doc/search-ui.md

Search UI

The User Interface's "Search" box accepts predicates of the form "[-]operator:value[:value]". These predicates may be separated by 'and' or 'or' keywords, or spaces which mean the same as 'and'. Expressions like this may be grouped with parenthesis. Grouped expressions are evaluated first. Grouped expressions may be negated.

An 'and' besides an 'or' is evaluated first. This means for example that

tag:foo or is:pano tag:bar

will return all images having tag foo together with the panorama images having tag bar.

Negation of a predicate is achieved by prepending a minus sign: -is:landscape will match with pictures of not landscape ratio. For example:

-(after:"2010-01-01" before:"2010-03-02T12:33:44") or loc:"Amsterdam"

will return all images having "modtime" outside the specified period, joined with all images taken in Amsterdam.

The logical grouping of the map predicate is an exception, see its definition.

When you need to match a value containing a space, you need to use double quotes around the value only. For example: tag:"Three word tagname" and not "tag:Three word tagname". If your value contains double quotes you can use backslash escaping. For example:

attr:bar:"He said: \"Hi\""

Usable operators

after

date format is RFC3339, but can be shortened as required.

before

i.e. 2011-01-01 is Jan 1 of year 2011, and 2011 means the same.

attr

match on attribute. Use attr:foo:bar to match nodes having their foo attribute set to bar, or attr:foo:~bar to match nodes whose foo attribute contains bar (case insensitive substring match).

format

file's format (or MIME-type) such as jpg, pdf, tiff.

has:location

image has a location (GPSLatitude and GPSLongitude can be retrieved from the image's EXIF tags).

loc

uses the available metadata, such as EXIF GPS fields, or check-in locations, to match nodes having a location near the specified location. Locations are resolved using maps.googleapis.com. For example: loc:"new york, new york"

locrect

uses the various location metadata fields (such as EXIF GPS) to match nodes having a location within the specified location area. The area is defined by its North-West corner, followed and comma-separated by its South-East corner. Each corner is defined by its latitude, followed and comma-separated by its longitude. For example: locrect:48.63,-123.37,46.59,-121.28

map

is defined like locrect, and it has a similar meaning. However, it is not defined server-side, and it is specifically meant to represent the area of the world that is visible in the screen when using the map aspect, and in particular when zooming or panning. As such, it follows stricter rules than the other predicates, which are:

1. only one map predicate is allowed in the whole expression.
2. since the map predicate is interpreted as if it were a logical 'and' with the rest of whole expression (regardless of its position within the expression), logical 'or's around it are forbidden.

is:image

object is an image

is:landscape

the image has a landscape aspect

is:pano

the image is panoramic: its width to height ratio is greater than or equal to 2.0.

is:portrait

the image has a portrait aspect.

height

use height:min-max to match images having a height of at least min and at most max. Use height:min- to specify only an underbound and height:-max to specify only an upperbound. Exact matches should use height:480

tag

match on a tag

width

use width:min-max to match images having a width of at least min and at most max. Use width:min- to specify only an underbound and width:-max to specify only an upperbound. Exact matches should use width:640

filename

search for permanodes of files with this filename (case sensitive)

childrenof

Find child permanodes of a parent permanode (or prefix of a parent permanode): childrenof:sha1-527cf12

parentof

Find parent permanodes of a child permanode (or prefix of a child permanode): parentof:sha1-527cf12

ref

matches nodes whose blobRef starts with the given substring: ref:sha1-527cf12