pdffonts.1

这是一个做pdf阅读器的源代码文件,是大家学习阅读器资料的很好参考

.\" Copyright 1999-2007 Glyph & Cog, LLC
.TH pdffonts 1 "27 February 2007"
.SH NAME
pdffonts \- Portable Document Format (PDF) font analyzer (version
3.02)
.SH SYNOPSIS
.B pdffonts
[options]
.RI [ PDF-file ]
.SH DESCRIPTION
.B Pdffonts
lists the fonts used in a Portable Document Format (PDF) file along
with various information for each font.
.PP
The following information is listed for each font:
.TP
.B name
the font name, exactly as given in the PDF file (potentially including
a subset prefix)
.TP
.B type
the font type -- see below for details
.TP
.B emb
"yes" if the font is embedded in the PDF file
.TP
.B sub
"yes" if the font is a subset
.TP
.B uni
"yes" if there is an explicit "ToUnicode" map in the PDF file (the
absence of a ToUnicode map doesn't necessarily mean that the text
can't be converted to Unicode)
.TP
.B object ID
the font dictionary object ID (number and generation)
.PP
PDF files can contain the following types of fonts:
.PP
.RS
Type 1
.RE
.RS
Type 1C -- aka Compact Font Format (CFF)
.RE
.RS
Type 1C (OT) -- OpenType with 8-bit CFF data
.RE
.RS
Type 3
.RE
.RS
TrueType
.RE
.RS
TrueType (OT) -- OpenType with 8-bit TrueType data
.RE
.RS
CID Type 0 -- 16-bit font with no specified type
.RE
.RS
CID Type 0C -- 16-bit PostScript CFF font
.RE
.RS
CID Type 0C (OT) -- OpenType with CID CFF data
.RE
.RS
CID TrueType -- 16-bit TrueType font
.RE
.RS
CID TrueType (OT) -- OpenType with CID TrueType data
.RE
.SH CONFIGURATION FILE
Pdffonts reads a configuration file at startup.  It first tries to
find the user's private config file, ~/.xpdfrc.  If that doesn't
exist, it looks for a system-wide config file, typically
/usr/local/etc/xpdfrc (but this location can be changed when pdffonts
is built).  See the
.BR xpdfrc (5)
man page for details.
.SH OPTIONS
Many of the following options can be set with configuration file
commands.  These are listed in square brackets with the description of
the corresponding command line option.
.TP
.BI \-f " number"
Specifies the first page to analyze.
.TP
.BI \-l " number"
Specifies the last page to analyze.
.TP
.BI \-opw " password"
Specify the owner password for the PDF file.  Providing this will
bypass all security restrictions.
.TP
.BI \-upw " password"
Specify the user password for the PDF file.
.TP
.BI \-cfg " config-file"
Read
.I config-file
in place of ~/.xpdfrc or the system-wide config file.
.TP
.B \-v
Print copyright and version information.
.TP
.B \-h
Print usage information.
.RB ( \-help
and
.B \-\-help
are equivalent.)
.SH EXIT CODES
The Xpdf tools use the following exit codes:
.TP
0
No error.
.TP
1
Error opening a PDF file.
.TP
2
Error opening an output file.
.TP
3
Error related to PDF permissions.
.TP
99
Other error.
.SH AUTHOR
The pdffonts software and documentation are copyright 1996-2007 Glyph
& Cog, LLC.
.SH "SEE ALSO"
.BR xpdf (1),
.BR pdftops (1),
.BR pdftotext (1),
.BR pdfinfo (1),
.BR pdftoppm (1),
.BR pdfimages (1),
.BR xpdfrc (5)
.br
.B http://www.foolabs.com/xpdf/