我有myfile.ps
与包括一个矢量图像。 但是当我运行ps2pdf:保留页面大小
ps2pdf myfile.ps
似乎输出页面大小为A4:矢量图像过大,成为切掉,所以大约一英寸丢失。
下面的伪报头在输出的PDF文件的印刷,除原来的矢量图像:
PLOT SIZE:8.02x8.62Inches
Magnification:7354.21X
是否有任何选项或任何方式对PS文件转换为保留一个PDF 原始纸张尺寸?
我有myfile.ps
与包括一个矢量图像。 但是当我运行ps2pdf:保留页面大小
ps2pdf myfile.ps
似乎输出页面大小为A4:矢量图像过大,成为切掉,所以大约一英寸丢失。
下面的伪报头在输出的PDF文件的印刷,除原来的矢量图像:
PLOT SIZE:8.02x8.62Inches
Magnification:7354.21X
是否有任何选项或任何方式对PS文件转换为保留一个PDF 原始纸张尺寸?
我怀疑你引用的2行是否真的在PS文件里面引用过......不是他们前面有%
评论字符?
如果他们不是通过这样的人物preceeded,没有PS解释会的工作,因为他们没有已知的PostScript运营商。
如果他们是通过这样的字符preceeded,PS解释会简单地忽略他们,因为......他们只是评论! :-)
如果你想这个PS文件转换为PDF,最好是直接运行的Ghostscript(ps2pdf
只有大约一个Ghostscript的命令薄shell脚本包装反正):
gs -o myfile.pdf \
-sDEVICE=pdfwrite \
-g5775x6207 \
-dPDFFitPage \
myfile.ps
说明:
-g...
给出像素的中等大小。595x842pt
(PostScript点数)。595x842pt == 5950x8420px
。8.02x8.62Inches ≈≈ 5775x6207px
。基于@Kurt Pfeifle的答案,我写了这个Perl脚本做任务:
#! /usr/bin/env perl
use strict;
use warnings;
use Scalar::Util qw(looks_like_number);
use List::Util qw(all);
sub ps2pdf;
sub get_ps_headers;
sub get_media_size;
sub main;
# Run the program
main();
# Function: main
#
# Program's entry point.
#
sub main {
for (@ARGV) {
# check input file
if(not -r) {
print "WARN: Cannot read input file: $_\n";
next;
}
# build PDF file name
my $pdf = $_;
$pdf =~ s/(\.e?ps)?$/.pdf/i;
ps2pdf($_, $pdf);
}
}
# Function: ps2pdf
#
# Converts a PostScript file to PDF format using GhostScript,
# keeping the medium size.
#
# Params:
#
# $ps_file - (string) Input [E]PS file name
# $pdf_file - (string) Output PDF file name
#
sub ps2pdf {
my ($ps_file, $pdf_file) = @_;
my $cmd = "gs -q -sDEVICE=pdfwrite -dPDFFitPage ";
# try to find the media size
my ($width, $height) = get_media_size(get_ps_header($ps_file));
# keep media size
if(defined $height) {
$cmd .= "-g${width}x${height} ";
}
# set input/output
$cmd .= "-o $pdf_file $ps_file";
print "Running: $cmd\n";
system($cmd);
}
# Function: get_media_size
#
# Computes the size of a PostScript document in pixels,
# from the headers in the PS file.
#
# Params:
#
# $hdr - (hash ref) Parsed PS header values
#
# Returns:
#
# On success: Two-element array holding the document's width and height
# On failure: undef
#
sub get_media_size {
my ($hdr) = @_;
# we need the DocumentMedia header
return undef if not defined $hdr->{DocumentMedia};
# look for valid values
my @values = split(/\s+/, $hdr->{DocumentMedia});
return undef if scalar @values < 3;
my ($width, $height) = @values[1, 2];
return undef if not all { looks_like_number($_) } ($width, $height);
# Ghostscript uses a default resolution of 720 pixels/inch,
# there are 72 PostScript points/inch.
return ($width*10, $height*10);
}
# Function: get_ps_header
#
# Parses a PostScript file looking for headers.
#
# Params:
#
# $ps_file - (string) Path of the input file
#
# Returns:
#
# (hash ref) - As expected, keys are header names,
# values are corresponding header values. A special key
# named `version' is included for headers of the type
# `PS-Adobe-3.0'
#
sub get_ps_header {
my ($ps_file) = @_;
my %head;
open my $fh, "<$ps_file" or die "Failed to open $ps_file\n";
while(<$fh>) {
# look for end of header
last if /^%%EndComments\b/;
# look for PS version
if(/^%!(\w+)/) {
$head{version} = $1;
}
# look for any other field
# Ex: %%BoundingBox: 0 0 1008 612
elsif(/^%%(\w+)\s*:\s*(.*\S)/) {
$head{$1} = $2;
}
# discard regular comments and blank lines
elsif(/^\s*(%.*)?$/) {
next;
}
# any other thing will finish the header
else {
last;
}
}
return \%head;
}
你说得对:我把输出的PDF头与PS头混在一起,错误地假设它们是同一件事。现在我纠正了这个问题。不幸的是,随着你的价值观,图像仍然被删除,也许是因为“标题”不是很值得信赖。但是将输出尺寸增加几百个像素就可以得到正确的结果。谢谢! – BowPark