Update to PostScript version

README.md

@@ -10,7 +10,7 @@ Please note that this is *saturday afternoon* quality code, *i.e.*, it is primar
 
 ### Requirements
 ```bash
-sudo apt-get install file poppler-utils bc pdfjam pdftk
+sudo apt-get install file poppler-utils bc ghostscript python
 ```
 
 ### Using
@@ -24,5 +24,6 @@ bash src/faas.sh example/input.pdf example/output.pdf
 - Add personal handwriting style for numbers
 - Add some stochastic variations
 
-### Extra
-Images in `res` directory were taken from [https://www.1001freedownloads.com/free-cliparts/?order=new&tag=handwritten](https://www.1001freedownloads.com/free-cliparts/?order=new&tag=handwritten), and converted to PDF with `inkscape --without-gui --export-pdf=1.pdf 1.svg` (for each file).
+### Contributors (in alphabetical order)
+- Bruno Ribeiro
+- Guilherme Folego ([email protected])

src/faas.sh

@@ -25,16 +25,6 @@
 # "1" for debug
 DEBUG="0"
 
-# Offset for pdfjam
-OFFSET8="-225"
-OFFSET1="-115"
-OFFSET7="-108"
-
-# Scale for pdfjam
-SCALE8="0.035"
-SCALE1="0.03"
-SCALE7="0.03"
-
 
 
 ##################
@@ -85,9 +75,9 @@ fi
 [[ "$DEBUG" == "1" ]] && echo "Temp dir: $tmpdir"
 
 
-# Resources directory
-resdir="$(dirname "$0")/../res"
-[[ "$DEBUG" == "1" ]] && echo "Res bir: $resdir"
+# Source directory
+srcdir="$(dirname "$0")/"
+[[ "$DEBUG" == "1" ]] && echo "Src bir: $srcdir"
 
 
 
@@ -109,30 +99,16 @@ pos=($(pdftotext "$infile" -bbox /dev/stdout |
 		grep ">-----</word>" -B1 |
 		grep ">[0-9][0-9]</word>" |
 		cut -f4,8 -d\" | sed s,\",+, | bc |
-		xargs -i echo "$size"*0.5-{}*0.5 | bc ))
+		xargs -i echo "$size"-{}*0.5 | bc ))
 [[ "$DEBUG" == "1" ]] && printf "Pos: %s\n" "${pos[@]}"
 
+# Process
+inputps="$tmpdir"/input.ps
+outputps="$tmpdir"/output.ps
 
-# Create a PDF for each entry
-for i in ${!pos[@]}; do
-    pdfjam --quiet --scale "$SCALE8" --offset "$OFFSET8 ${pos[i]}" "$resdir"/8.pdf --outfile "$tmpdir"/jam8-"$i".pdf
-    pdfjam --quiet --scale "$SCALE1" --offset "$OFFSET1 ${pos[i]}" "$resdir"/1.pdf --outfile "$tmpdir"/jam1-"$i".pdf
-    pdfjam --quiet --scale "$SCALE7" --offset "$OFFSET7 ${pos[i]}" "$resdir"/7.pdf --outfile "$tmpdir"/jam7-"$i".pdf
-done
-
-# Separate input pages
-pdftk "$infile" cat 1 output "$tmpdir"/stamp-0.pdf
-pdftk "$infile" cat 2 output "$tmpdir"/back.pdf
-
-# Combine entries
-for i in ${!pos[@]}; do
-    pdftk "$tmpdir"/jam8-"$i".pdf  stamp "$tmpdir"/jam1-"$i".pdf   output "$tmpdir"/tmp-"$i".pdf
-    pdftk "$tmpdir"/tmp-"$i".pdf   stamp "$tmpdir"/jam7-"$i".pdf   output "$tmpdir"/jamall-"$i".pdf
-    pdftk "$tmpdir"/stamp-"$i".pdf stamp "$tmpdir"/jamall-"$i".pdf output "$tmpdir"/stamp-"$((i+1))".pdf
-done
-
-# Generate final file
-pdfunite "$tmpdir"/stamp-${#pos[@]}.pdf "$tmpdir"/back.pdf "$outfile"
+pdf2ps "$infile" "$inputps"
+python "$srcdir"/process.py "$inputps" "$outputps" "${pos[@]}"
+ps2pdf "$outputps" "$outfile"
 
 # Clean up
 [[ "$DEBUG" != "1" ]] && rm -rf "$tmpdir"

src/process.py

@@ -0,0 +1,111 @@
+#!/usr/bin/python
+
+
+# process.py
+# Copyright 2017
+#     Bruno Ribeiro
+#     Guilherme Folego ([email protected])
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+import sys
+import argparse
+
+
+def parse_args(argv):
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('infile', metavar='input.ps', type=argparse.FileType('r'),
+                            help='input PostScript file')
+    parser.add_argument('outfile', metavar='output.ps', type=argparse.FileType('w'),
+                            help='output PostScript file')
+    parser.add_argument('pos', metavar='position', type=float, nargs='+',
+                            help='positions for time entries')
+    parser.add_argument('-d', '--debug', action='store_true',
+                            help='activate debug mode')
+    parser.add_argument('--start-string', help='string to be used as start time')
+    parser.add_argument('--end-string', help='string to be used as end time')
+
+
+    args = parser.parse_args(args=argv)
+    return args
+
+
+def process(infile, outfile, pos, startstr, endstr, debug=False):
+    content = infile.read()
+
+    if (startstr == None):
+        startstr = '08:00'
+    if (endstr == None):
+        endstr = '17:00'
+
+    pos1 = content.find("COLABORADOR)Tj")
+    pos2 = content.rfind("<</Length", 0, pos1);
+    pos3 = content.find("endstream", pos1)
+
+    # everything before the first page
+    firstPart = content[:pos2]
+    # everything after the first page
+    lastPart  = content[pos3:]
+    # first page data
+    content   = content[pos2:pos3]
+    # skip the 'start of stream' marker
+    pos2 = content.find("stream")
+    content = content[pos2 + 6:]
+
+    extra = []
+    # define the current font
+    extra.append('/R12 9 Tf')
+
+    # Note: at the point this extra content is inserted, the coordinate system is reset to its
+    # default (i.e. origin is located at the bottom left corner of the page)
+
+    # fix the y positions
+    pos = [ y - 1 for y in pos ]
+
+    # create PostScript entries using some dark magic
+    for y in pos:
+        # write the start time
+        extra.append('68 ' + str(y) + ' moveto')
+        extra.append('(' + startstr + ') dup stringwidth pop 2 div neg 0 rmoveto show')
+        # write the end time
+        extra.append('186 ' + str(y) + ' moveto')
+        extra.append('(' + endstr + ') dup stringwidth pop 2 div neg 0 rmoveto show')
+
+    # insert any extra content at the end of the stream (later content has higher z-index)
+    pos1 = content.find('Q\nQ\n\n')
+    content = content[:pos1 + 5] + '\n' + '\n'.join(extra) + '\n' + content[pos1 + 5:]
+
+    outfile.write(firstPart)
+    outfile.write("<</Length ")
+    outfile.write(str(len(content)))
+    outfile.write(">>stream\n")
+    outfile.write(content)
+    outfile.write(lastPart)
+
+
+# Main
+def main(argv):
+
+    # Parse arguments
+    args = parse_args(argv)
+    if args.debug: print(args)
+
+    process(args.infile, args.outfile, args.pos, args.start_string, args.end_string, args.debug)
+
+
+if __name__ == "__main__":
+    main(sys.argv[1:])
+