path: root/Master/texmf-dist/doc/man/man1/a2ping.1

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.\" ========================================================================
.\"
.IX Title "A2PING 1"
.TH A2PING 1 "2019-11-28" "a2ping" "Peter Szabo"
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.SH "NAME"
a2ping.pl \-\- convert between PS, EPS and PDF and other page description
formats
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
 \fBa2ping.pl\fR [\fB\-\-\fR]\fBhelp\fR
 \fBa2ping.pl\fR [\fB\-\-\fR]\fBdoc\fR
 \fBa2ping.pl\fR [\fIoptions\fR] <\fIinputfile\fR> [[\fIoutformat\fR:] \fIoutputfile\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBa2ping\fR is a \s-1UNIX\s0 command line utility written in Perl that
converts many raster image and vector graphics formats to \s-1EPS\s0 or \s-1PDF\s0 and
other page description formats. Accepted input file formats are: \s-1PS\s0
(PostScript), \s-1EPS, PDF, PNG, JPEG, TIFF, PNM, BMP, GIF, LBM, XPM, PCX,
TGA.\s0 Accepted output formats are: \s-1EPS, PCL5, PDF, PDF1, PBM, PGM, PPM,
PS,\s0 markedEPS, markedPS, \s-1PNG, XWD, BMP, TIFF, JPEG, GIF, XPM.\s0
\&\fBa2ping\fR delegates the low-level work to
Ghostscript (\s-1GS\s0), \fBpdftops\fR and \fBsam2p\fR. \fBa2ping\fR fixes many glitches
during the \s-1EPS\s0 to \s-1EPS\s0 conversion, so its output is often more compatible
and better embeddable than its input.
.PP
Without the \f(CW\*(C`\-\-below\*(C'\fR option, it is guarenteed to start at the 0,0
coordinate. \f(CW\*(C`\-\-below\*(C'\fR, \f(CW\*(C`\-\-hires\*(C'\fR and \f(CW\*(C`\-v\*(C'\fR are recommended options.
.PP
The page size is set exactly corresponding to the BoundingBox.
This means that when Ghostscript renders it, the result needs no
cropping, and the \s-1PDF\s0 MediaBox is correct.
.PP
If the bounding box is not right, of course, you have problems. If you
feed crap in, you get crap. But you can supply the
\&\fB\-\-bboxfrom=compute\-gs\fR option to make \s-1GS\s0 recompute the bounding box.
.PP
The name of the input file doesn't matter \*(-- \fBa2ping\fR detects the file
format based on the first few bytes of the file. The name of the output
file matters if \fIoutformat\fR is missing from the command line: then the
extension of the output file determines the FileFormat (\fIoutformat\fR).
.SH "EXTERNAL PROGRAMS"
.IX Header "EXTERNAL PROGRAMS"
The internal file format of \fBa2ping.pl\fR is \s-1PS/EPS.\s0 Everything read is
first converted to \s-1PS\s0 or \s-1EPS,\s0 then processed by \fBa2ping.pl\fR, then
converted to the output format.
.PP
To analyse the bounding box and other properties of non-EPS \s-1PS\s0 files
(and \s-1EPS\s0 files with option \fB\-\-bboxfrom\fR other than \fB=guess\fR), \s-1GS\s0 is
used. Converting \s-1PS\s0 to \s-1EPS\s0 involves this analysis.
.PP
To write \s-1PDF\s0 files, \s-1GS\s0 is used.
.PP
To read \s-1PDF\s0 files, \fBpdftops\fR from the \fBxpdf\fR package is used.
.PP
Sampled input formats are \s-1PNG, JPEG, TIFF, PNM, BMP, GIF, LBM, XPM, PCX\s0
and \s-1TGA.\s0 To read sampled input formats, \fBsam2p\fR is used. \fBsam2p\fR is
a raster image converter written in \*(C+ by the author of \fBa2ping.pl\fR.
.PP
Extra output formats are \s-1PNG, XWD, BMP, TIFF, JPEG, GIF\s0 and \s-1XPM.\s0 To
write extra output formats, \fBsam2p\fR and \s-1GS\s0 are used.
.PP
\&\s-1PNM\s0 output formats are \s-1PGM, PGM\s0 and \s-1PPM.\s0 To write \s-1PNM\s0 output formats, \s-1GS\s0
is used.
.SH "OPTIONS"
.IX Header "OPTIONS"
.SS "General Options"
.IX Subsection "General Options"
.IP "\fB\-h\fR, \fB\-\-help\fR" 2
.IX Item "-h, --help"
Show a summary of the usage
.IP "\fB\-\-doc\fR" 2
.IX Item "--doc"
Show the man page
.IP "\fB\-v\fR, \fB\-\-(no)verbose\fR" 2
.IX Item "-v, --(no)verbose"
Show progress and debug messages (default: no)
.SS "Options for the Bounding box"
.IX Subsection "Options for the Bounding box"
.IP "\fB\-\-(no)hires\fR" 2
.IX Item "--(no)hires"
Use HiResBoundingBox in the input file, if present (default: yes)
.IP "\fB\-\-(no)exact\fR" 2
.IX Item "--(no)exact"
Use ExactBoundingBox in the input file, if present (default: no)
.IP "\fB\-\-(no)keepoldmediabox\fR" 2
.IX Item "--(no)keepoldmediabox"
keep only old, [0 0]\-based MediaBox in \s-1PDF\s0 (default: no)
.IP "\fB\-\-bboxfrom=\fR\fIadsc|compute\-gs|guess|pagesize\fR" 2
.IX Item "--bboxfrom=adsc|compute-gs|guess|pagesize"
Method for determining the BoundingBox  (default: guess)
.IP "\fB\-\-(no)below\fR" 2
.IX Item "--(no)below"
Allow page content below and left of the origin (default: no)
.SS "Options for graphics and fonts"
.IX Subsection "Options for graphics and fonts"
.IP "\fB\-\-(no)compress\fR" 2
.IX Item "--(no)compress"
use compression                   (default: best)
.IP "\fB\-\-(no)antialias\fR" 2
.IX Item "--(no)antialias"
render shades at outlines.  Possible values: (=\fIscale3yes\fR =\fIno\fR =\fIyes\fR)  (default: scale3no)
.IP "\fB\-\-(no)lossy\fR" 2
.IX Item "--(no)lossy"
allow lossy image filters (\s-1EPS\-\s0>\s-1PDF\s0) (default: yes)
.IP "\fB\-\-papersize=\fR\fIunchanged|force\-unknown|600bpx5cm\fR" 2
.IX Item "--papersize=unchanged|force-unknown|600bpx5cm"
(default: default) (bp)
.IP "\fB\-\-threshold=\fR" 2
.IX Item "--threshold="
min color for 1 in 8\->1 bit conv  (default: 128)
.SS "Options for debugging and changing internals"
.IX Subsection "Options for debugging and changing internals"
.IP "\fB\-\-(no)tmpunlink\fR" 2
.IX Item "--(no)tmpunlink"
Unlink temporary files (default: yes).  Use \fB\-\-notmpunklink\fR if you
want to inspect intermediate files.
.IP "\fB\-\-gs\-cmd=\fR\fIpath\fR" 2
.IX Item "--gs-cmd=path"
path to Ghostscript program (default: gs or gswin32c)
.IP "\fB\-\-gs\-ccmd=\fR\fIpath\fR" 2
.IX Item "--gs-ccmd=path"
path to Ghostscript for BoundingBox calculation (default: gs or gswin32c)
.IP "\fB\-\-gsextra=\fR\fI\s-1GS_ARGS\s0\fR" 2
.IX Item "--gsextra=GS_ARGS"
Pass extra arguments to gs
.IP "\fB\-\-extra=\fR" 2
.IX Item "--extra="
Pass extra arguments to external program (i.e pdftops)
.SH "TIPS AND TRICKS"
.IX Header "TIPS AND TRICKS"
.IP "\(bu" 2
If your \s-1EPS\s0 contains a wrong bounding box, you can fix it by running
\&\f(CW\*(C`a2ping.pl \-v \-\-bboxfrom=compute\-gs thefile.eps \-\-\*(C'\fR
.IP "\(bu" 2
You can specify \fB\-\fR as \fIinputfile\fR to get stdin and as \fIoutputfile\fR
to get stdout. This works even for \s-1PDF\s0 files (which must be seekable),
because \fBa2ping\fR copies them to a temporary file automatically.
.IP "\(bu" 2
If \fIinputfile\fR and \fIoutputfile\fR are the same, \fBa2ping\fR copies the
\&\fIinputfile\fR to a temporary location first. However, this usage is
recommended only if there is a backup of the file to be restored in case
\&\fBa2ping\fR doesn't produce the desired result.
.IP "\(bu" 2
If you specify \fB\-\-\fR as \fIoutputfile\fR, it will be the same as \fIinputfile\fR.
.IP "\(bu" 2
\&\fBa2ping\fR respects \fB\-\-Duplex\fR for FileFormat \s-1PCL5,\s0 even though \s-1GS\s0 doesn't.
.IP "\(bu" 2
If you have an incompatible \s-1PS\s0 that \s-1GS\s0 can read but your printer cannot print,
just run \f(CW\*(C`a2ping.pl foo.ps PDF: \- | a2ping.pl \- PS: foo.ps\*(C'\fR
.IP "\(bu" 2
If you have a \s-1PS\s0 coming from Win32 (often with extension \f(CW\*(C`.prn\*(C'\fR), run
it through \fBa2ping\fR. It will remove the resolution changes and the
progress text printed to the terminal (which confuses \fBgv\fR\|(1) and makes
some filters in the print queue emit incorrect output).
.IP "\(bu" 2
\&\fBa2ping\fR does antialiasing (\fB\-\-antialias=scale3no\fR) of glyphs and
curves when emitting a sampled image (FileFormats such as \s-1PGM\s0 and \s-1PPM\s0).
This improves readability of the glyphs. \fB=yes\fR instructs \s-1GS\s0 to do
internal antialiasing, but it usually doesn't improve much. \fB=scale3no\fR
turns off \s-1GS\s0 internal antialiasing, but makes it render everything 3x3
as big, and then scales it back down. \fB=scale3no\fR turns on both 3x3
scaling and \s-1GS\s0 internal antialiasing, which results in thicker lines and
worse quality in general.
.IP "\(bu" 2
When creating a \s-1PBM\s0 file, antialiasing usually doesn't improve the
quality, so it is switched off by default. But if you set
\&\fB\-\-antialias=scale3no\fR or \fB\-\-antialias=scale3yes\fR, \s-1GS\s0 will render a \s-1PGM\s0 file,
and the value of \fB\-\-threshold\fR determines the minimum intensity for white in
the final \s-1PBM.\s0
.IP "\(bu" 2
If you need a bigger sampled output file, specify a larger
\&\fB\-\-Resolution\fR. The default is \fB\-\-Resolution=72\fR. If your sampled output file
is going to be really big, you should specify \fB\-\-AntiAlias=yes\fR instead of
the default \fB\-\-AntiAlias=scale3no\fR to speed up conversion.
.IP "\(bu" 2
To make sure fonts are included in a \s-1PDF\s0 file generated from eps, use
\&\fB\-\-gsextra='\-dEmbedAllFonts=true \-dPDFSETTINGS=/printer'\fR.
.SH "MISC"
.IX Header "MISC"
.IP "\(bu" 2
Doesn't depend on the filename or extension of the input file.
.IP "\(bu" 2
Conversion from \s-1EPS\s0 to \s-1PDF:\s0 fixes glitches etc., calls gs
\&\-sDEVICE=pdfwrite
.IP "\(bu" 2
Conversion from \s-1EPS\s0 to \s-1EPS:\s0 fixes various glitches, moves (llx,lly) to
(0,0), removes binary junk from the beginning of the \s-1EPS\s0 etc.
.IP "\(bu" 2
Conversion from \s-1PDF\s0 to \s-1PDF:\s0 keeps the file intact
.IP "\(bu" 2
Conversion from \s-1PDF\s0 to \s-1EPS:\s0 calls pdftops \-eps (of the xpdf package)
.IP "\(bu" 2
Conversion from \s-1PS\s0 to \s-1EPS:\s0 keeps 1st page only, removes setpagedevice etc.
.SH "AUTHORS"
.IX Header "AUTHORS"
The author of \fBa2ping\fR is Pe\*'ter Szabo\*' <\fIpts@fazekas.hu\fR>.
.PP
\&\fBa2ping\fR is inspired by and historically based on the \fBepstopdf\fR Perl
script modified by Thomas Esser, Sept. 1998, but his modifications have
been removed from \fBa2ping\fR, and also \fBa2ping\fR and \fBepstopdf\fR do not
share common code anymore.  \fBepstopdf\fR is written by Sebastian Rahtz,
for Elsevier Science. \fBepstopdf\fR contained extra tricks from Hans Hagen's
texutil.
.PP
\&\fBa2ping\fR contains contributions from several people, see the file
\&\fI\s-1HISTORY\s0.txt\fR for details. Thank you all for contributing!