release v1.0

* Add `-d/--dryrun` option
* LaTeX files provided using `-f/--files` option instead of positional args
* Add `-v/--version` option

CHANGELOG.md

@@ -1,5 +1,11 @@
-# v0.1
-* Initial release
+# v1.0
+## Breaking changes
+* LaTeX source files are now provided using the `-f/--files` option rather than
+  as positional arguments
+
+## Feature additions
+* Add dry-run option `-d/--dryrun`
+* Add version option `-v/--version`
 
 # v0.12
 ## Fixes
@@ -8,4 +14,5 @@
 ## Feature additions
 * Add option to specify a custom install prefix
 
-
+# v0.1
+* Initial release

README.md

@@ -56,10 +56,10 @@ Assume that there are two LaTeX files: `a.tex` and `b.tex`, the reference
 BibTeX file is `g.bib` and we want the output file to be `refs.bib`. The
 command to achieve this would be:
 ```sh
-bibx -b g.bib -o refs.bib a.tex b.tex
+bibx -b g.bib -o refs.bib -f a.tex b.tex
 
 # A variation
-bibx -b g.bib -o refs.bib *.tex
+bibx -b g.bib -o refs.bib -f *.tex
 ```
 
 ## Bugs
@@ -84,7 +84,7 @@ pandoc --standalone --to man bibx.1.md -o bibx.1
 ### Tests
 If contributing to the code, please run the following test after your edits:
 ```
-./bibx -b test/global.bib -o test/ext.bib test/*.tex
+./bibx -b test/global.bib -o test/ext.bib -f test/*.tex
 diff test/ext.bib test/ext-golden.bib
 ```
 The `diff` command must return **NOTHING**. This means that the output is as

TOOD.md

@@ -1,4 +1,4 @@
 - [ ] Remove dependency on `ext.sh`
 - [ ] Support multiple reference BibTeX files
 - [ ] Support a directory of reference BibTeX files
-- [ ] Option to perform a dry-run (no file output, only print info to stdout)
+- [x] Option to perform a dry-run (no file output, only print info to stdout)

bibx

@@ -8,17 +8,19 @@ import os
 from bibtexparser.bparser import BibTexParser, BibDatabase
 from bibtexparser.bwriter import BibTexWriter
 
-def main():
+VERSION = "v1.0"
+
+def get_parser():
     parser = argparse.ArgumentParser(
             description="""Extract bibliography entries from LaTeX sources
             using a reference BibTeX file""",
             epilog="""For reporting bugs, giving suggestions and contributing
             to this project, visit https://github.com/CodePurble/bibextract"""
             )
-    parser.add_argument("-b",
-                        "--bib",
-                        required=True,
-                        help="BibTeX file to look for entries in"
+    parser.add_argument("-v",
+                        "--version",
+                        help="Show version information and exit",
+                        action="store_true"
                         )
     parser.add_argument("-o",
                         "--output",
@@ -38,9 +40,10 @@ def main():
                         help="Suppress output to stdout",
                         action="store_true"
                         )
-    parser.add_argument("files",
+    parser.add_argument("-f",
+                        "--files",
                         help="""LaTeX files to scan for citations whose BibTeX
-                        entries need to be extract""",
+                        entries need to be extracted""",
                         action="extend",
                         nargs="+"
                         )
@@ -50,56 +53,78 @@ def main():
                         file. Default is four spaces""",
                         default="    ",
                         )
+    parser.add_argument("-d",
+                        "--dryrun",
+                        help="""Perform a dry-run, i.e. do not output a file,
+                        just print info messages. Ignores the -o option,
+                        affected by -q""",
+                        action="store_true"
+                        )
+    parser.add_argument("-b",
+                        "--bib",
+                        help="BibTeX file to look for entries in",
+                        )
+    return(parser)
 
+def main():
+    parser = get_parser()
     args = parser.parse_args()
 
-    # Scan LaTeX files for citations and generate set containing BibTeX entry
-    # labels
-    e_set = set()
-    for file in args.files:
-        output = subprocess.run([os.path.dirname(os.path.realpath(__file__)) + '/ext.sh',
-                                 shlex.quote(file)],
-                                capture_output=True
-                                )
-        if(output.returncode == 0):
-            e_set = e_set.union(set(output.stdout.decode().rstrip().split('\n')))
+    if args.version:
+        parser.exit(0, f"{VERSION}\n")
+    else:
+        if (args.bib is None) or (args.files is None):
+            parser.print_usage()
+            parser.exit(2, "Error: the following arguments are required: -b/--bib, -f/--files\n")
+        else:
+            # Scan LaTeX files for citations and generate set containing BibTeX entry
+            # labels
+            e_set = set()
+            for file in args.files:
+                output = subprocess.run([os.path.dirname(os.path.realpath(__file__)) + '/ext.sh',
+                                         shlex.quote(file)],
+                                        capture_output=True
+                                        )
+                if(output.returncode == 0):
+                    e_set = e_set.union(set(output.stdout.decode().rstrip().split('\n')))
 
-    # Merge custom BibTeX entry labels into main set if any
-    if(args.entries is not None):
-        with open(args.entries, 'r') as en:
-            while(entry := en.readline()):
-                e_set = e_set.union(entry)
+            # Merge custom BibTeX entry labels into main set if any
+            if(args.entries is not None):
+                with open(args.entries, 'r') as en:
+                    while(entry := en.readline()):
+                        e_set = e_set.union(entry)
 
-    parser = BibTexParser()
-    parser.ignore_nonstandard_types = False
-    with open(args.bib) as bibtex_file:
-        bib_database = bibtexparser.load(bibtex_file, parser)
+            parser = BibTexParser()
+            parser.ignore_nonstandard_types = False
+            with open(args.bib) as bibtex_file:
+                bib_database = bibtexparser.load(bibtex_file, parser)
 
-    e_dict = bib_database.entries_dict
-    out_db = BibDatabase()
+            e_dict = bib_database.entries_dict
+            out_db = BibDatabase()
 
-    entrycount = 0
-    found = 0
-    for entry in e_set:
-        entrycount += 1
-        if entry in e_dict.keys():
-            if not args.quiet:
-                print(f"Found: {entry}")
-            found += 1
-            out_db.entries.append(e_dict[entry])
-        else:
-            if not args.quiet:
-                print(f"Not found: {entry}")
+            entrycount = 0
+            found = 0
+            for entry in e_set:
+                entrycount += 1
+                if entry in e_dict.keys():
+                    if not args.quiet:
+                        print(f"Found: {entry}")
+                    found += 1
+                    out_db.entries.append(e_dict[entry])
+                else:
+                    if not args.quiet:
+                        print(f"Not found: {entry}")
 
 
-    writer = BibTexWriter()
-    writer.indent = args.indent
-    writer.add_trailing_comma = True
-    with open(args.output, 'w') as outfile:
-        bibtexparser.dump(out_db, outfile, writer)
+            writer = BibTexWriter()
+            writer.indent = args.indent
+            writer.add_trailing_comma = True
+            if not args.dryrun:
+                with open(args.output, 'w') as outfile:
+                    bibtexparser.dump(out_db, outfile, writer)
 
-    if not args.quiet:
-        print(f"\nFound {found}/{entrycount} entries")
+            if not args.quiet:
+                print(f"\nFound {found}/{entrycount} entries")
 
 if __name__ == "__main__":
     main()

bibx.1

@@ -23,8 +23,8 @@ using citations from LaTeX sources, to create project-specific BibTeX
 files.
 .SH SYNOPSIS
 .PP
-bibx [-h] -b BIB [-o OUTPUT] [-e ENTRIES] [-q] [-i INDENT] files [files
-\&...]
+bibx [-h] [-v] [-o OUTPUT] [-e ENTRIES] [-q] [-f FILES [FILES \&...]]
+[-i INDENT] [-d] [-b BIB]
 .SH DESCRIPTION
 .PP
 This program extracts citations made in LaTeX source files and generates
@@ -49,31 +49,49 @@ label3
 .fi
 .SH OPTIONS
 .PP
--h, \[en]help
+-h, --help
 .IP
 .nf
 \f[C]
 Show help and exit
 \f[R]
 .fi
 .PP
--b BIB, \[en]bib BIB
+-v, --version
 .IP
 .nf
 \f[C]
-Specify global BibTeX file to look for entries in
+Show version information and exit
 \f[R]
 .fi
 .PP
--o OUTPUT, \[en]output OUTPUT
+-b BIB, --bib BIB
+.IP
+.nf
+\f[C]
+Specify global BibTeX file to look for entries in (required if not using -h
+or -v)
+\f[R]
+.fi
+.PP
+-f FILES [FILES \&...], --files FILES [FILES \&...]
+.IP
+.nf
+\f[C]
+LaTeX files to scan for citations whose BibTeX entries need to be extracted
+(required if not using -h or -v)
+\f[R]
+.fi
+.PP
+-o OUTPUT, --output OUTPUT
 .IP
 .nf
 \f[C]
 Specify file to write the BibTeX output to. Defaults to \[aq]./ext.bib\[aq].
 \f[R]
 .fi
 .PP
--e ENTRIES, \[en]entries ENTRIES
+-e ENTRIES, --entries ENTRIES
 .IP
 .nf
 \f[C]
@@ -82,7 +100,7 @@ the final output.
 \f[R]
 .fi
 .PP
--i INDENT, \[en]indent INDENT
+-i INDENT, --indent INDENT
 .IP
 .nf
 \f[C]
@@ -91,7 +109,16 @@ final output. Defaults to four spaces. Example: -i \[dq]  \[dq] (use two spaces)
 \f[R]
 .fi
 .PP
--q, \[en]quiet
+-d, --dryrun
+.IP
+.nf
+\f[C]
+Perform a dry-run, i.e. do not output to a file, just print info messages.
+Ignores the -o option, affected by -q.
+\f[R]
+.fi
+.PP
+-q, --quiet
 .IP
 .nf
 \f[C]
@@ -108,7 +135,7 @@ The command to achieve this would be:
 .IP
 .nf
 \f[C]
-bibx -b g.bib -o refs.bib a.tex b.tex
+bibx -b g.bib -o refs.bib -f a.tex b.tex
 \f[R]
 .fi
 .SH BUGS

bibx.1.md

@@ -7,8 +7,7 @@ citations from LaTeX sources, to create project-specific BibTeX files.
 
 # SYNOPSIS
 
-
-bibx \[-h] -b BIB \[-o OUTPUT] \[-e ENTRIES] \[-q] \[-i INDENT] files \[files ...]
+bibx \[-h] \[-v] \[-o OUTPUT] \[-e ENTRIES] \[-q] \[-f FILES [FILES ...]] \[-i INDENT] \[-d] \[-b BIB]
 
 # DESCRIPTION
 
@@ -31,29 +30,44 @@ label3
 
 # OPTIONS
 
--h, --help
+-h, \--help
 
     Show help and exit
 
--b BIB, --bib BIB
+-v, \--version
+
+    Show version information and exit
+
+-b BIB, \--bib BIB
+
+    Specify global BibTeX file to look for entries in (required if not using -h
+    or -v)
 
-    Specify global BibTeX file to look for entries in
+-f FILES [FILES ...], \--files FILES [FILES ...]
 
--o OUTPUT, --output OUTPUT
+    LaTeX files to scan for citations whose BibTeX entries need to be extracted
+    (required if not using -h or -v)
+
+-o OUTPUT, \--output OUTPUT
 
     Specify file to write the BibTeX output to. Defaults to './ext.bib'.
 
--e ENTRIES, --entries ENTRIES
+-e ENTRIES, \--entries ENTRIES
 
     Specify file containing extra entries names to be searched and included in
     the final output.
 
--i INDENT, --indent INDENT
+-i INDENT, \--indent INDENT
 
     Specify the character(s) to be used to indent the BibTeX entries in the
     final output. Defaults to four spaces. Example: -i "  " (use two spaces).
 
--q, --quiet
+-d, \--dryrun
+
+    Perform a dry-run, i.e. do not output to a file, just print info messages.
+    Ignores the -o option, affected by -q.
+
+-q, \--quiet
 
     Suppress output to stdout
 
@@ -64,7 +78,7 @@ BibTeX file is `g.bib` and we want the output file to be `refs.bib`.
 
 The command to achieve this would be:
 ```
-bibx -b g.bib -o refs.bib a.tex b.tex
+bibx -b g.bib -o refs.bib -f a.tex b.tex
 ```
 
 # BUGS