From 3e40c30e59db4f060d8f95fca0d5cded75e7ba64 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Sun, 15 Jul 2012 14:28:10 -0700
Subject: implement multi-line mode as an /option/

---
 tools/mail-scan.c | 62 ++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 45 insertions(+), 17 deletions(-)

diff --git a/tools/mail-scan.c b/tools/mail-scan.c
index 1260f30..c2b798b 100644
--- a/tools/mail-scan.c
+++ b/tools/mail-scan.c
@@ -4,6 +4,9 @@
 // scrutinize email
 //
 
+// hint:  mail-scan +from * \...
+//  | sed 's/.*@//;s/>$//' | sort | uniq -c | sort -nr > some-junk.from-count
+
 #include <iostream>
 #include <stdlib.h>             /* for exit() */
 #include <string>
@@ -126,6 +129,18 @@ void exeunt(const int sts){
   exit(sts);
 }
 
+string join(const string sep, list<string> stuff){
+  string rslt;
+  if (!stuff.size()) return rslt;
+  list<string>::const_iterator ptr = stuff.begin();
+  rslt = *ptr++;
+  for (; ptr != stuff.end(); ptr++){
+    rslt += sep;
+    rslt += *ptr;
+  }
+  return rslt;
+}
+
 ////////////////////////////////////////////////////////////
 int main(int _argc, const char** _argv){
 ////  pid_t pid = getpid();
@@ -138,6 +153,8 @@ int main(int _argc, const char** _argv){
   int maxsize(1000000);
   list<string> watchword;
   list<string> dofile;
+  int vflag(0);
+  int multi(0);
 
   while (argc) {
     string arg(*argv); argv++; argc--;
@@ -145,7 +162,13 @@ int main(int _argc, const char** _argv){
     if (prefix(arg, "-help")) {
       usage(0);
     }
-    if (arg.substr(0,1) == "-") {
+    if (prefix(arg, "-verify")){
+      vflag++;
+      continue;
+    } else if (prefix(arg, "-multi")){
+      multi++;
+      continue;
+    } else if (arg.substr(0,1) == "-") {
       cerr << "Unrecognized option '" << arg << "'" << endl;
       cerr << "For help, try:  " << progname << " -help" << endl;
       exit(sa_usage);
@@ -161,41 +184,42 @@ int main(int _argc, const char** _argv){
        file != dofile.end(); file++) {
     ifstream infile;
     infile.open(file->c_str());
-    if (infile.bad()) {
+    if (!infile.good()) {
       cerr << "Failed to open file: " << *file << endl;
+      exit(1);
     }
     int inheads(1);
     string boundary("x-xx-x");
     int msgsize(0);
-    for (;;){
-      if (infile.eof()) break;
-      if (infile.bad()) return 1;
+    int foundsome_infile(0);
+    for (;;){           // loop over all records in file
       if (inheads) {
-        string header;
-        if (getline(infile, header).fail()) continue;
-        msgsize += header.length()+1;
-        for (;;) {
+        list<string> Header;
+        string line;
+        for (;;) {      // loop over all lines in this record
           if (infile.eof()) break;
           if (infile.bad()) return 1;
-          char ch;
-          if (infile.get(ch).fail()) continue;
-          infile.putback(ch);
-          if (ch != ' ' && ch != '\t') break;
-          string line;
           if (getline(infile, line).fail()) continue;
+          Header.push_back(line);
           msgsize += line.length()+1;
           if (msgsize > maxsize) {
             cerr << "skrewt rejection: bigger than " << maxsize << endl;
             exeunt(sa_spam);
           }
-          header += "\n" + line;
+          char ch;
+          if (infile.get(ch).fail()) continue;
+          infile.putback(ch);
+          if (ch != ' ' && ch != '\t') break;
         }
-        if (header.length() == 0) {
+        if (Header.front().length() == 0) {
           inheads = 0;
         }
         else {
           string headword;
           string rest;
+          string header;
+          if (!multi) header = join(" ", Header);
+          else        header = join("\n", Header);
           size_t where = header.find(":");
           if (where != string::npos) {
             headword = header.substr(0, where);
@@ -205,7 +229,9 @@ int main(int _argc, const char** _argv){
           for (list<string>::const_iterator ptr = watchword.begin();
             ptr != watchword.end(); ptr++) {
             if (headword == toLower(*ptr)) {
-              cout << *file << " :: " << header << endl;
+              foundsome_infile++;
+              if (!vflag) cout          // << foundsome_infile << " "
+              << *file << " :: " << header << endl;
             }
           }
         }
@@ -215,5 +241,7 @@ int main(int _argc, const char** _argv){
         break;
       }
     }
+    if (vflag && !foundsome_infile) cout << foundsome_infile
+        << " ... " << *file << endl;
   }
 }
-- 
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