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authorHiltjo Posthuma <hiltjo@codemadness.org>2019-04-20 16:21:44 +0200
committerHiltjo Posthuma <hiltjo@codemadness.org>2019-04-20 16:21:44 +0200
commit493e2e508530aa95d4806e4aca52183794d20ad0 (patch)
tree359d77dc854116d619c93a6acf03c36b7ec6581e
parenteb9e9a957a75069edecbfcc1872930d07e146a1a (diff)
add sfeed_atom: convert one or more feeds from TSV (back to) Atom
-rw-r--r--Makefile1
-rw-r--r--README1
-rw-r--r--sfeed_atom.137
-rw-r--r--sfeed_atom.c99
4 files changed, 138 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 158d0d8..95e2cd1 100644
--- a/Makefile
+++ b/Makefile
@@ -7,6 +7,7 @@ VERSION = 0.9.8
BIN = \
sfeed\
+ sfeed_atom\
sfeed_frames\
sfeed_gph \
sfeed_html\
diff --git a/README b/README
index d5d0679..08c755d 100644
--- a/README
+++ b/README
@@ -113,6 +113,7 @@ Files
sfeed - Read XML RSS or Atom feed data from stdin. Write feed data
in TAB-separated format to stdout.
+sfeed_atom - Format feed data (TSV) to an Atom feed.
sfeed_frames - Format feed data (TSV) to HTML file(s) with frames.
sfeed_gph - Format feed data (TSV) to geomyidae .gph files.
sfeed_html - Format feed data (TSV) to HTML.
diff --git a/sfeed_atom.1 b/sfeed_atom.1
new file mode 100644
index 0000000..0aacd18
--- /dev/null
+++ b/sfeed_atom.1
@@ -0,0 +1,37 @@
+.Dd April 20, 2019
+.Dt SFEED_ATOM 1
+.Os
+.Sh NAME
+.Nm sfeed_atom
+.Nd format feed data to an Atom feed
+.Sh SYNOPSIS
+.Nm
+.Op Ar file...
+.Sh DESCRIPTION
+.Nm
+formats feed data (TSV) from
+.Xr sfeed 1
+from stdin or
+.Ar file
+to stdout as an Atom (XML) feed.
+If one or more
+.Ar file
+are specified, the basename of the
+.Ar file
+is used as the feed name in the output.
+If no
+.Ar file
+parameters are specified and so the data is read from stdin the feed name
+is empty.
+.Pp
+If
+.Nm
+is reading from one or more
+.Ar file
+it will prefix the entry title with the feed name which is the basename of the
+input file.
+.Sh SEE ALSO
+.Xr sfeed 1 ,
+.Xr sfeed_plain 1
+.Sh AUTHORS
+.An Hiltjo Posthuma Aq Mt hiltjo@codemadness.org
diff --git a/sfeed_atom.c b/sfeed_atom.c
new file mode 100644
index 0000000..d9ee099
--- /dev/null
+++ b/sfeed_atom.c
@@ -0,0 +1,99 @@
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "util.h"
+
+static time_t comparetime;
+static char *line;
+static size_t linesize;
+
+static void
+printfeed(FILE *fp, const char *feedname)
+{
+ char *fields[FieldLast];
+ struct tm *tm;
+ time_t parsedtime;
+ ssize_t linelen;
+
+ while ((linelen = getline(&line, &linesize, fp)) > 0) {
+ if (line[linelen - 1] == '\n')
+ line[--linelen] = '\0';
+ if (!parseline(line, fields))
+ break;
+
+ parsedtime = 0;
+ if (strtotime(fields[FieldUnixTimestamp], &parsedtime))
+ continue;
+ if (!(tm = localtime(&parsedtime)))
+ err(1, "localtime");
+
+ fputs("<entry>\n\t<title>", stdout);
+ if (feedname[0]) {
+ fputs("[", stdout);
+ xmlencode(feedname, stdout);
+ fputs("] ", stdout);
+ }
+ xmlencode(fields[FieldTitle], stdout);
+ fputs("</title>\n\t<link rel=\"alternate\" href=\"", stdout);
+ xmlencode(fields[FieldLink], stdout);
+ fputs("\" />\n", stdout);
+ if (fields[FieldEnclosure][0]) {
+ fputs("\t<link rel=\"enclosure\" href=\"", stdout);
+ xmlencode(fields[FieldEnclosure], stdout);
+ fputs("\" />\n", stdout);
+ }
+ fprintf(stdout, "\t<published>%04d-%02d-%02dT%02d:%02d:%02dZ</published>\n",
+ tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ if (fields[FieldAuthor][0]) {
+ fputs("\t<author><name>", stdout);
+ xmlencode(fields[FieldAuthor], stdout);
+ fputs("</name></author>\n", stdout);
+ }
+ fputs("</entry>\n", stdout);
+ }
+}
+
+int
+main(int argc, char *argv[])
+{
+ FILE *fp;
+ char *name;
+ int i;
+
+ if (argc == 1) {
+ if (pledge("stdio", NULL) == -1)
+ err(1, "pledge");
+ } else {
+ if (pledge("stdio rpath", NULL) == -1)
+ err(1, "pledge");
+ }
+
+ fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+ "<feed xmlns=\"http://www.w3.org/2005/Atom\" xml:lang=\"en\">\n",
+ stdout);
+
+ if (argc == 1) {
+ printfeed(stdin, "");
+ } else {
+ for (i = 1; i < argc; i++) {
+ if (!(fp = fopen(argv[i], "r")))
+ err(1, "fopen: %s", argv[i]);
+ name = ((name = strrchr(argv[i], '/'))) ? name + 1 : argv[i];
+ printfeed(fp, name);
+ if (ferror(fp))
+ err(1, "ferror: %s", argv[i]);
+ fclose(fp);
+ }
+ }
+
+ fputs("</feed>\n", stdout);
+
+ return 0;
+}