init

Author: Joshua Vécsei

README.md

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+# Replace BibTex urldate with note
+
+Automatically replaces the BibTex urldates with note attributes for all BibTex entries to show the date in predefined templates which do not support the urldate attribute by default.
+
+
+
+```latex
+@phdthesis{key,
+ author = {name},
+ title = {title},
+ url = {http://example.com},
+ urldate = {02/18/2018}
+}
+```
+
+Will be converted to
+
+```latex
+@phdthesis{key,
+ author = {name},
+ title = {title},
+ url = {http://example.com},
+ note = {last visited at 02/18/2018}
+}
+```
+
+The prefix can be passed as an argument to the command-line interface.
+
+
+
+## Usage
+
+`urldatetonote -h`
+
+### Example
+
+`urldatetonote --prefix "last visited at" input.bib output.bib`
+
+The prefix is an optional argument at defaults to "last visited at".
+
+
+
+## Build
+
+`go build urldatetonote.go`
+
+or 
+
+`go install` to install the binary to your `bin` directory.

urldatetonote.go

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+/*
+Copyright 2018 Joshua Vécsei
+
+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.
+*/
+
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"regexp"
+
+	"github.com/urfave/cli"
+)
+
+func main() {
+	app := cli.NewApp()
+	app.Name = "UrldateToNote"
+	app.Usage = "Bibtex urldate to note"
+
+	app.Flags = []cli.Flag{
+		cli.StringFlag{
+			Name:  "prefix, p",
+			Value: "last visited at",
+			Usage: "adds `PREFIX` to urldate",
+		},
+	}
+
+	app.Action = func(c *cli.Context) error {
+		inputFile := ""
+		outputFile := "new.bib"
+		if c.NArg() > 1 {
+			inputFile = c.Args().Get(0)
+			outputFile = c.Args().Get(1)
+		} else {
+			log.Fatal("Error! Usage: urldatetonote input.bib output.bib")
+		}
+		prefix := c.String("prefix")
+		bibFile, err := ioutil.ReadFile(inputFile)
+
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		urlDateRegexp, _ := regexp.Compile(`(?i)urldate = \{([0-9\.-/a-z]+)\}`)
+		updatedBibtex := urlDateRegexp.ReplaceAllString(string(bibFile), "note = {"+prefix+" $1}")
+		err = ioutil.WriteFile(outputFile, []byte(updatedBibtex), 777)
+
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Printf("Successfully wrote new file %s", outputFile)
+
+		return nil
+	}
+	app.Run(os.Args)
+}