pa_get_exif_data (public)

 pa_get_exif_data file

Defined in packages/photo-album/tcl/photo-album-procs.tcl

Returns a array get list with the some of the exif data or an empty string if the file is not a jpg file uses jhead Keys: Aperture Cameramake Cameramodel CCDWidth DateTime Exposurebias Exposuretime Filedate Filename Filesize Film Flashused Focallength Focallength35 FocusDist Jpegprocess MeteringMode Resolution

Parameters:

file (required)

Partial Call Graph (max 5 caller/called nodes):

Testcases:

No testcase defined.

Source code:

 
    # a map from jhead string to internal tags.
    array set map [list {File date} Filedate  {File name} Filename  {File size} Filesize  {Camera make} Cameramake  {Camera model} Cameramodel  {Date/Time} DateTime  {Resolution} Resolution  {Flash used} Flashused  {Focal length} Focallength  {Focal length35} Focallength35  {CCD Width} CCDWidth  {Exposure time} Exposuretime  {Aperture} Aperture  {Focus Dist.} FocusDist  {Exposure bias} Exposurebias  {Metering Mode} MeteringMode  {Jpeg process} Jpegprocess  {Film} Film ]

    # try to get the data.
    if {[catch {set results [exec jhead $file]} errmsg]} { 
        ns_log Warning "pa_get_exif_data: jhead failed with error - $errmsg"
        return {}
    } elseif {[string match {Not JPEG:*} $results]} { 
        return {}
    }

    # parse data
    foreach line [split $results "\n"] { 
        regexp {([^:]*):(.*)} $line match tag value
        set tag [string trim $tag]
        set value [string trim $value]
        if {[info exists map($tag)]} { 
            set out($map($tag)) $value
        }
    }
    
    # make sure we have a value for every tag 
    foreach {dummy tag} [array get map] { 
        if {![info exists out($tag)]} { 
            set out($tag) {}
        }
    }

    # fix the annoying ones...
    foreach tag [list  Exposuretime FocusDist] { 
        if {[regexp {([0-9.]+)} $out($tag) match new]} {
            set out($tag) $new
        }
    }

    foreach tag [list  DateTime Filedate] { 
        regsub {([0-9]+):([0-9][0-9]):} $out($tag) "\\1-\\2-" out($tag)
    }

    if {[regexp {.*35mm equivalent: ([0-9]+).*} $out(Focallength) match new]} {
        set out(Focallength35) $new
    } else { 
        set out(Focallength35) {}
    }
    regsub {([0-9.]+)mm.*} $out(Focallength) "\\1" out(Focallength)

    if {[string equal -nocase $out(Flashused) yes]} { 
        set out(Flashused) 1
    } else { 
        set out(Flashused) 0
    }
    
    if {$out(Cameramake) ne ""} { 
        set out(Film) Digital
    }
    
    regsub {([0-9]+).*} $out(Filesize) "\\1" out(Filesize)

    return [array get out]

Generic XQL file:

packages/photo-album/tcl/photo-album-procs.xql

PostgreSQL XQL file:

packages/photo-album/tcl/photo-album-procs-postgresql.xql

Oracle XQL file:

packages/photo-album/tcl/photo-album-procs-oracle.xql