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[png2uri] Changed environment variable from "format" to "PNG2URI_FMT"

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and cleaned up indentation.
This commit is contained in:
Glenn Randers-Pehrson
2012-07-05 06:51:29 -05:00
parent 9947a5f360
commit 35fbb6e6de
2 changed files with 87 additions and 67 deletions
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102
png2uri
View File

@@ -1,6 +1,6 @@
#!/bin/sh
#
# png2uri version 1.0.2, July 4, 2012.
# png2uri version 1.0.3, July 5, 2012.
#
# NO COPYRIGHT RIGHTS ARE CLAIMED TO THIS SOFTWARE.
#
@@ -23,8 +23,8 @@
# png2uri is a command-line application that creates an HTML "img" tag on
# standard output containing a data URI in accordance with RFC-2397, from
# a PNG file or from a PNG datastream received from standard input.
# Other formats besides the default, PNG, are supported, via the "-f or
# --format option or, if that option was not supplied, by inspection of the
# Other formats besides the default, PNG, are supported, via the "-f" or
# "--format" option or, if that option was not supplied, by inspection of the
# filename extension.
#
# Usage: png2uri [-f type|--format type] [-u|--uri_only] [file]
@@ -44,86 +44,100 @@
# to encode in base64 according to RFC-3548, and a working "sed".
#
# If you prefer a web-based converter or a java application, this isn't
# it. Use your search engine and look for "png data uri" to find one.
# it. Use your search engine and look for "data uri" to find one.
#
uri_only="false"
format="unknown"
PNG2URI_URI="true"
PNG2URI_FMT="unknown"
while true
do
case x$1 in
x-f|x--format)
case X$1 in
X-f|X--format)
shift
case x$1 in
xpng|xPNG)
format=image/png
case X$1 in
Xpng|XPNG)
PNG2URI_FMT=image/png
;;
xjpeg|xJPEG|xjpg|xJPG)
format=image/jpeg
Xjpeg|XJPEG|Xjpg|XJPG)
PNG2URI_FMT=image/jpeg
;;
xbmp|xBMP)
format=image/bmp
Xbmp|XBMP)
PNG2URI_FMT=image/bmp
;;
xgif|xGIF)
format=image/gif
Xgif|XGIF)
PNG2URI_FMT=image/gif
;;
*)
format=$1
PNG2URI_FMT=$1
;;
esac
shift
;;
x-u|x--ur*)
uri_only="true"
X-u|X--ur*)
PNG2URI_URI="false"
shift
;;
x)
X)
# Convert standard input.
case $format in
unknown)
format=image/png
case X$PNG2URI_FMT in
Xunknown)
PNG2URI_FMT=image/png
;;
esac
case $uri_only in
true)
echo "data:$format;base64,"
case X$PNG2URI_URI in
Xfalse)
echo "data:$PNG2URI_FMT;base64,"
uuencode -m ==== | grep -v ====
;;
false)
echo "<img alt=\"PNG\" title=\"PNG\" src=\"data:$format;base64,"
*)
echo "<img alt=\"PNG\" title=\"PNG\" src=\"data:$PNG2URI_FMT;base64,"
uuencode -m ==== | grep -v ====
echo "\">"
;;
esac
exit
;;
*)
# Convert the named file.
case $format in
unknown)
format=image/png
case X$PNG2URI_FMT in
Xunknown)
PNG2URI_FMT=image/png
extension=`echo $1 | sed "s/.*\.//"`
case x$extension in
xjpeg|xJPEG|xjpg|xJPG)
format=image/jpeg
case X$extension in
Xjpeg|XJPEG|Xjpg|XJPG)
PNG2URI_FMT=image/jpeg
;;
xbmp|xBMP)
format=image/bmp
Xbmp|XBMP)
PNG2URI_FMT=image/bmp
;;
xgif|xGIF)
format=image/gif
Xgif|XGIF)
PNG2URI_FMT=image/gif
;;
esac
;;
esac
case $uri_only in
true)
echo "data:$format;base64,"
case X$PNG2URI_URI in
Xfalse)
echo "data:$PNG2URI_FMT;base64,"
uuencode -m $1 ==== | grep -v ====
;;
false)
echo "<img alt=\"$1\" title=\"$1\" src=\"data:$format;base64,"
*)
echo "<img alt=\"$1\" title=\"$1\" src=\"data:$PNG2URI_FMT;base64,"
uuencode -m $1 ==== | grep -v ====
echo "\">"
;;

10
png2uri-README.txt
View File

@@ -21,8 +21,8 @@
png2uri is a command-line application that creates an HTML "img" tag on
standard output containing a data URI, from a PNG file or from standard
input. Other formats besides the default, PNG, are supported, via the "-f
or --format option or, if that option was not supplied, by inspection of
input. Other formats besides the default, PNG, are supported, via the "-f"
or "--format" option or, if that option was not supplied, by inspection of
the filename extension.
Usage: png2uri [-f format|--format format] [-u|--uri_only] [file]
@@ -93,6 +93,12 @@
Implemented "-f TYPE" and "--format TYPE" option.
Version 1.0.3, July 5, 2012:
Changed environment variable "format" to PNG2URI_FMT reduce possibility`
of name conflict, and changed "uri_only" to PNG2URI_URI. Fixed some
indentation.
TO DO
1. Test on various platforms. The following have been tried