getbib (1905B)
1 #!/bin/sh 2 3 BIB_FILE="${HOME}/latex/uni.bib" 4 [ -f "${BIB_FILE}" ] || BIB_FILE="${2:-$(find "${HOME}" -path "${HOME}/.*" \ 5 -prune -o -type "f" -name "*.bib" -print -quit)}" 6 7 { [ -f "${BIB_FILE}" ] || [ "${2}" ]; } || { 8 printf "%s\n" "Create a .bib file or provide as \$2." && exit "1" 9 } 10 11 filter() { 12 sed -n -E 's/.*((DOI|doi)((\.(org))?\/?|:? *))([^: ]+[^ .]).*/\6/p; T; q' 13 } 14 15 fpdf() { 16 pdf="${1}" 17 doi="$(pdfinfo "${pdf}" 2> "/dev/null" | filter)" 18 19 [ "${doi}" ] || doi="$(pdftotext -q -l "2" "${pdf}" - 2> "/dev/null" | filter)" 20 21 [ "${doi}" ] || printf "%s\n" "No DOI found for PDF: ${pdf}" >&2 22 23 printf "%s\n" "${doi}" 24 } 25 26 arrange() { 27 sed 's/\}, /\},\n /g 28 s/, /,\n / 29 s/ }/\n}/ 30 s/,\s*pages=/,\n\tpages=/' | 31 sed '1s/^ *// 32 1s/[0-9]*\([0-9]\{2\}\)/\1/ 33 1s/_// 34 1s/.*/\L&/ 35 s/.*=/\L&/ 36 s/=/ = /' 37 } 38 39 doi2bib() { 40 doi="${1#doi:}" 41 url="https://api.crossref.org/works/${doi}/transform/application/x-bibtex" 42 entry="$(curl -kLsS --no-fail "${url}" | arrange)" 43 red='\033[0;31m' 44 reset='\033[0m' 45 46 printf "${red}%s${reset}\n" "${entry}" 47 48 [ "${entry%"${entry#?}"}" != "@" ] && { 49 printf "%s\n" "Failed to fetch bibtex entry for DOI: ${doi}" 50 return "1" 51 } 52 53 rg -iFq "doi = {${doi}}" "${BIB_FILE}" 2> "/dev/null" && { 54 printf "%s\n" "Bibtex entry for DOI: ${doi} already exists in the file." 55 } || { 56 [ -s "${BIB_FILE}" ] && printf "\n" >> "${BIB_FILE}" 57 printf "%s\n" "${entry}" >> "${BIB_FILE}" 58 printf "%s\n" "Added bibtex entry for DOI: ${doi}" 59 } 60 } 61 62 [ "${1}" ] || { 63 printf "%s\n" "Give either a pdf file or a DOI or a directory path that has PDFs as an argument." 64 exit "1" 65 } 66 67 [ -f "${1}" ] && doi="$(fpdf "${1}")" && doi2bib "${doi}" && exit "0" 68 69 [ -d "${1}" ] && for i in "${1}"/*.pdf; do doi="$(fpdf "${i}")" && doi2bib "${doi}"; done && exit "0" 70 71 doi="$(printf "%s\n" "${1}" | filter)" && doi2bib "${doi}"