Update chronicling america dl script to rm .xml files

README.md

@@ -37,33 +37,28 @@ Download (~8GB), excluding most file types except for `.txt` (while keeping
 unknown file types, in case they're useful):
 
 ```
-rsync -av \
-    --del \
-    --exclude='*.gif' \
-    --exclude='*.htm' \
-    --exclude='*.html' \
-    --exclude='*.iso' \
-    --exclude='*.jpeg' \
-    --exclude='*.jpg' \
-    --exclude='*.m4a' \
-    --exclude='*.m4b' \
-    --exclude='*.mid' \
-    --exclude='*.mp3' \
-    --exclude='*.ogg' \
-    --exclude='*.png' \
-    --exclude='*.spx' \
-    --exclude='*.spx' \
-    --exclude='*.xml' \
-    --exclude='*.zip' \
+rsync -av --del \
+    --include='*/' \
+    --include='*.txt' \
+    --include='*.TXT' \
+    --include='*.text' \
+    --exclude='*' \
+    --info=progress2 \
     ftp.ibiblio.org::gutenberg \
     data/gutenberg
 ```
 
+List all unique file extensions:
+
+```
+find data/gutenberg/ -type f | sed -n 's/.*\.\([^.\/]\+\)$/\1/p' | sort -u
+```
+
 Afterwards (or during) the download, there'll be a lot of non-text files.
 Remove them using:
 
 ```
-find data/gutenberg/ -type f \( -iname '*.gif' -o -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.html' -o -iname '*.htm' -o -iname '*.png' -o -iname '*.mp3' -o -iname '*.rst' -o -iname '*.rtf' -o -iname '*.doc' -o -iname '*.lit' -o -iname '*.xml' -o -iname '*.iso.*' -o -iname '*.prc' \) -delete
+find data/gutenberg/ -type f \( -iname '*.m4a' -o -iname '*.m4b' -o -iname '*.gif' -o -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.html' -o -iname '*.htm' -o -iname '*.png' -o -iname '*.mp3' -o -iname '*.rst' -o -iname '*.rtf' -o -iname '*.doc' -o -iname '*.lit' -o -iname '*.xml' -o -iname '*.iso.*' -o -iname '*.prc' \) -delete
 ```
 
 List all txt files and their sizes (in human readable numbers)
@@ -110,6 +105,18 @@ And also anything published after 1950
 
 And also anything not in English
 
+Hmm. A bit problematic, Project Gutenberg explicitly does not include the
+original publication date of the items in their catalogue
+[link](www.gutenberg.org/ebooks/offline_catalogs.html#the-gutindex-listings-of-ebooks):
+
+> Project Gutenberg metadata does not include the original print source
+> publication date(s). Because Project Gutenberg eBooks are substantially
+> different from the source book(s), we track the Project Gutenberg publication
+> date (“release date”), but do not include print source information in the
+> metadata.
+
+So we'll need to date all the items manually. Hrmm
+
 ## Chronicling America
 
 Information: https://chroniclingamerica.loc.gov/ocr/
@@ -129,6 +136,14 @@ indicating content after 1950 and delete them:
 find -E data/chronicling-america -type d -regex '.*/(1950|19[5-9][0-9]|20[0-9]{2})$' -exec rm -rf {} +
 ```
 
+We'll also want to delete all the XML files:
+
+```
+find -type f -iname '*.xml' -delete
+```
+
+(this will clear a few hundred GBs)
+
 TODO the resulting files are pretty bad. The OCR has many many artefacts, and
 not all of them are obvious how to fix, since the source scans/images aren't
 available apparently. Not sure how to fix these without using modern LLMs and
@@ -159,20 +174,31 @@ find data/bhl/ -type f \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.html' -
 
 ## Archive.org
 
-Dataset query (1800-1950): https://archive.org/search?query=date%3A%5B1800-01-01%20TO%201949-12-31%5D
-
-Advanced search: https://archive.org/advancedsearch.php
-
-Query: `mediatype:(texts) AND language:(English) AND date:[1800-01-01 TO 1949-12-31]`
-
-URL with query:
-
-```
-https://archive.org/advancedsearch.php?q=mediatype%3A%28texts%29+AND+language%3A%28English%29+AND+date%3A%5B1800-01-01+TO+1949-12-31%5D+&fl%5B%5D=identifier&sort%5B%5D=date+asc&sort%5B%5D=&sort%5B%5D=&rows=50&page=1&callback=callback&save=yes&output=csv
-```
-
-Theoretically should be able to download lots of stuff, but I don't know
-exactly how to do so.
+The script `src/download_archive_dot_org.py` will download an _index_ of all
+the archive files matching the above query. These indices take up about 259MB,
+and will be stored to `data/archive-dot-org/indices/`, containing the date, the
+id, and the size of the item in bytes. The ID can then be used to download the
+actual files. To download all the text files associated with the IDs listed in
+a file `./itemlist.txt`, you can use this command:
+
+```
+wget \
+    --recursive \
+    --span-hosts \
+    --no-clobber \
+    --no-parent \
+    --no-host-directories \
+    --cut-dirs=1 \
+    --accept=txt \
+    --execute robots=off \
+    --level=1 \
+    --input-file=./itemlist.txt \
+    --base='http://archive.org/download/'
+```
+
+- Dataset query (1800-1950): https://archive.org/search?query=date%3A%5B1800-01-01%20TO%201949-12-31%5D
+- Advanced search: https://archive.org/advancedsearch.php
+- Query: `mediatype:(texts) AND language:(English) AND date:[1800-01-01 TO 1949-12-31]`
 
 ## US Post Office
 

src/download_chronicling_america.py

@@ -23,6 +23,14 @@ CATALOG_URL = "https://chroniclingamerica.loc.gov/ocr.json"
 DEST_ROOT = Path("data/chronicling-america")
 ARCHIVES_DIR = DEST_ROOT / "_archives"
 
+def remove_non_txt_files(root: Path) -> None:
+    deleted = 0
+    for p in root.rglob("*"):
+        if p.is_file() and p.suffix.lower() != ".txt":
+            p.unlink()
+            deleted += 1
+    print(f"deleted {deleted} non-txt files in {root}")
+
 def main() -> None:
     DEST_ROOT.mkdir(parents=True, exist_ok=True)
     ARCHIVES_DIR.mkdir(parents=True, exist_ok=True)
@@ -46,6 +54,7 @@ def main() -> None:
             print(f"extracting {name}")
             with tarfile.open(archive_path, "r:bz2") as tar:
                 tar.extractall(out_dir)  # simple, unsafe but short
+            remove_non_txt_files(out_dir)
             os.remove(archive_path)
 
     print("done")