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authorLinus Torvalds <torvalds@g5.osdl.org>2005-07-16 17:05:26 (GMT)
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-16 17:05:26 (GMT)
commitc5f7674a97e621bfab5544165098b4860ee6e247 (patch)
tree5653f607a0af70840636086cb3f7571f88ba0b76 /tools/mailinfo.c
parentfc7ef1e8ae8c19c06a4fa3d574c13d793e66186a (diff)
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Prepare git-tools for merging into the main git archive
Rename into a "tools" subdirectory, and change name of "dotest" to "applymbox". Remove stripspace (which was already copied into git) and cvs2git (which was likewise already copied into git, and then replaced by a much better perl version). All of this was brought on by Ryan Anderson shaming me into it. Thanks. I guess.
Diffstat (limited to 'tools/mailinfo.c')
-rw-r--r--tools/mailinfo.c270
1 files changed, 270 insertions, 0 deletions
diff --git a/tools/mailinfo.c b/tools/mailinfo.c
new file mode 100644
index 0000000..ae279bf
--- /dev/null
+++ b/tools/mailinfo.c
@@ -0,0 +1,270 @@
+/*
+ * Another stupid program, this one parsing the headers of an
+ * email to figure out authorship and subject
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+static FILE *cmitmsg, *patchfile;
+
+static char line[1000];
+static char date[1000];
+static char name[1000];
+static char email[1000];
+static char subject[1000];
+
+static char *sanity_check(char *name, char *email)
+{
+ int len = strlen(name);
+ if (len < 3 || len > 60)
+ return email;
+ if (strchr(name, '@') || strchr(name, '<') || strchr(name, '>'))
+ return email;
+ return name;
+}
+
+static int handle_from(char *line)
+{
+ char *at = strchr(line, '@');
+ char *dst;
+
+ if (!at)
+ return 0;
+
+ /*
+ * If we already have one email, don't take any confusing lines
+ */
+ if (*email && strchr(at+1, '@'))
+ return 0;
+
+ while (at > line) {
+ char c = at[-1];
+ if (isspace(c) || c == '<')
+ break;
+ at--;
+ }
+ dst = email;
+ for (;;) {
+ unsigned char c = *at;
+ if (!c || c == '>' || isspace(c))
+ break;
+ *at++ = ' ';
+ *dst++ = c;
+ }
+ *dst++ = 0;
+
+ at = line + strlen(line);
+ while (at > line) {
+ unsigned char c = *--at;
+ if (isalnum(c))
+ break;
+ *at = 0;
+ }
+
+ at = line;
+ for (;;) {
+ unsigned char c = *at;
+ if (!c)
+ break;
+ if (isalnum(c))
+ break;
+ at++;
+ }
+
+ at = sanity_check(at, email);
+
+ strcpy(name, at);
+ return 1;
+}
+
+static void handle_date(char *line)
+{
+ strcpy(date, line);
+}
+
+static void handle_subject(char *line)
+{
+ strcpy(subject, line);
+}
+
+static void add_subject_line(char *line)
+{
+ while (isspace(*line))
+ line++;
+ *--line = ' ';
+ strcat(subject, line);
+}
+
+static void check_line(char *line, int len)
+{
+ static int cont = -1;
+ if (!memcmp(line, "From:", 5) && isspace(line[5])) {
+ handle_from(line+6);
+ cont = 0;
+ return;
+ }
+ if (!memcmp(line, "Date:", 5) && isspace(line[5])) {
+ handle_date(line+6);
+ cont = 0;
+ return;
+ }
+ if (!memcmp(line, "Subject:", 8) && isspace(line[8])) {
+ handle_subject(line+9);
+ cont = 1;
+ return;
+ }
+ if (isspace(*line)) {
+ switch (cont) {
+ case 0:
+ fprintf(stderr, "I don't do 'Date:' or 'From:' line continuations\n");
+ break;
+ case 1:
+ add_subject_line(line);
+ return;
+ default:
+ break;
+ }
+ }
+ cont = -1;
+}
+
+static char * cleanup_subject(char *subject)
+{
+ for (;;) {
+ char *p;
+ int len, remove;
+ switch (*subject) {
+ case 'r': case 'R':
+ if (!memcmp("e:", subject+1, 2)) {
+ subject +=3;
+ continue;
+ }
+ break;
+ case ' ': case '\t': case ':':
+ subject++;
+ continue;
+
+ case '[':
+ p = strchr(subject, ']');
+ if (!p) {
+ subject++;
+ continue;
+ }
+ len = strlen(p);
+ remove = p - subject;
+ if (remove <= len *2) {
+ subject = p+1;
+ continue;
+ }
+ break;
+ }
+ return subject;
+ }
+}
+
+static void cleanup_space(char *buf)
+{
+ unsigned char c;
+ while ((c = *buf) != 0) {
+ buf++;
+ if (isspace(c)) {
+ buf[-1] = ' ';
+ c = *buf;
+ while (isspace(c)) {
+ int len = strlen(buf);
+ memmove(buf, buf+1, len);
+ c = *buf;
+ }
+ }
+ }
+}
+
+static void handle_rest(void)
+{
+ char *sub = cleanup_subject(subject);
+ cleanup_space(name);
+ cleanup_space(date);
+ cleanup_space(email);
+ cleanup_space(sub);
+ printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n", name, email, sub, date);
+ FILE *out = cmitmsg;
+
+ do {
+ if (!memcmp("diff -", line, 6) ||
+ !memcmp("---", line, 3) ||
+ !memcmp("Index: ", line, 7))
+ out = patchfile;
+
+ fputs(line, out);
+ } while (fgets(line, sizeof(line), stdin) != NULL);
+
+ if (out == cmitmsg) {
+ fprintf(stderr, "No patch found\n");
+ exit(1);
+ }
+
+ fclose(cmitmsg);
+ fclose(patchfile);
+}
+
+static int eatspace(char *line)
+{
+ int len = strlen(line);
+ while (len > 0 && isspace(line[len-1]))
+ line[--len] = 0;
+ return len;
+}
+
+static void handle_body(void)
+{
+ int has_from = 0;
+
+ /* First line of body can be a From: */
+ while (fgets(line, sizeof(line), stdin) != NULL) {
+ int len = eatspace(line);
+ if (!len)
+ continue;
+ if (!memcmp("From:", line, 5) && isspace(line[5])) {
+ if (!has_from && handle_from(line+6)) {
+ has_from = 1;
+ continue;
+ }
+ }
+ line[len] = '\n';
+ handle_rest();
+ break;
+ }
+}
+
+static void usage(void)
+{
+ fprintf(stderr, "mailinfo msg-file path-file < email\n");
+ exit(1);
+}
+
+int main(int argc, char ** argv)
+{
+ if (argc != 3)
+ usage();
+ cmitmsg = fopen(argv[1], "w");
+ if (!cmitmsg) {
+ perror(argv[1]);
+ exit(1);
+ }
+ patchfile = fopen(argv[2], "w");
+ if (!patchfile) {
+ perror(argv[2]);
+ exit(1);
+ }
+ while (fgets(line, sizeof(line), stdin) != NULL) {
+ int len = eatspace(line);
+ if (!len) {
+ handle_body();
+ break;
+ }
+ check_line(line, len);
+ }
+ return 0;
+}