wow. that was easy: git mv core nucleus

[feisty_meow.git] / nucleus / applications / utilities / splitter.cpp

diff --git a/nucleus/applications/utilities/splitter.cpp b/nucleus/applications/utilities/splitter.cpp
new file mode 100644 (file)
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--- /dev/null
+++ b/nucleus/applications/utilities/splitter.cpp
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+/*****************************************************************************\
+*                                                                             *
+*  Name   : splitter                                                          *
+*  Author : Chris Koeritz                                                     *
+*                                                                             *
+*  Purpose:                                                                   *
+*                                                                             *
+*    Takes text as input and splits the lines so that they will fit on a      *
+*  standard 80 column terminal.                                               *
+*                                                                             *
+*******************************************************************************
+* Copyright (c) 1993-$now By Author.  This program is free software; you can  *
+* redistribute it and/or modify it under the terms of the GNU General Public  *
+* License as published by the Free Software Foundation; either version 2 of   *
+* the License or (at your option) any later version.  This is online at:      *
+*     http://www.fsf.org/copyleft/gpl.html                                    *
+* Please send any updates to: fred@gruntose.com                               *
+\*****************************************************************************/
+
+#include <application/hoople_main.h>
+#include <basis/astring.h>
+#include <filesystem/byte_filer.h>
+#include <filesystem/filename.h>
+#include <loggers/console_logger.h>
+#include <loggers/file_logger.h>
+#include <structures/static_memory_gremlin.h>
+#include <structures/set.h>
+#include <textual/string_manipulation.h>
+
+#include <stdio.h>
+
+using namespace application;
+using namespace basis;
+using namespace filesystem;
+using namespace loggers;
+using namespace structures;
+using namespace textual;
+
+const int MAX_BUFFER = 1024;
+
+class splitter_app : public application_shell
+{
+public:
+  splitter_app() : application_shell() {}
+
+  DEFINE_CLASS_NAME("splitter_app");
+
+  virtual int execute();
+
+  int print_instructions();
+
+private:
+};
+
+//////////////
+
+int splitter_app::print_instructions()
+{
+  astring name = filename(_global_argv[0]).basename().raw();
+  log(a_sprintf("%s usage:", name.s()));
+  log(astring::empty_string());
+  log(a_sprintf("\
+This program splits long lines in input files into a more reasonable size.\n\
+Any filenames on the command line are split and sent to standard output.\n\
+The following options change how the splitting is performed:\n\
+   --help or -?\tShow this help information.\n\
+   --mincol N\tMinimum column to use for output.\n\
+   --maxcol N\tMinimum column to use for output.\n\
+"));
+  return -3;
+}
+
+int splitter_app::execute()
+{
+  command_line cmds(_global_argc, _global_argv);  // parse the command line up.
+
+  // retrieve any specific flags first.
+  astring temp;
+  int min_col = 0;
+  if (cmds.get_value("mincol", temp))
+    min_col = temp.convert(min_col);
+  int max_col = 77;
+  if (cmds.get_value("maxcol", temp))
+    max_col = temp.convert(max_col);
+  // look for help command.
+  int junk_index = 0;
+  if (cmds.find("help", junk_index, false)
+      || cmds.find('h', junk_index, false)
+      || cmds.find("?", junk_index, false)
+      || cmds.find('?', junk_index, false) ) {
+    print_instructions();
+    return 0;
+  }
+
+  // gather extra input files.
+  string_set input_files;
+  for (int i = 0; i < cmds.entries(); i++) {
+    const command_parameter &curr = cmds.get(i);
+    if (curr.type() == command_parameter::VALUE) {
+//log(astring("adding input file:") + curr.text());
+      input_files += curr.text();
+    }
+  }
+
+  astring accumulator;
+  for (int q = 0; q < input_files.length(); q++) {
+    byte_filer current(input_files[q], "r");
+    if (!current.good()) continue;
+    while (!current.eof()) {
+      astring line_read;
+      int num_chars = current.getline(line_read, MAX_BUFFER);
+      if (!num_chars) continue;
+//printf("line len=%d, cont=%s\n", line_read.length(), line_read.s());
+      accumulator += line_read;
+////      accumulator += '\n';
+    }
+  }
+
+  // now get from standard input if there weren't any files specified.
+  if (!input_files.length()) {
+    char input_line[MAX_BUFFER + 2];
+    while (!feof(stdin)) {
+      char *got = fgets(input_line, MAX_BUFFER, stdin);
+      if (!got) break;
+//printf("line=%s\n", got);
+      accumulator += got;
+////      accumulator += '\n';
+    }
+  }
+//printf("splitting accum with %d chars...\n", accumulator.length());
+  astring chewed;
+  string_manipulation::split_lines(accumulator, chewed, min_col, max_col);
+//printf("chewed string now has %d chars...\n", chewed.length());
+  printf("%s", chewed.s());
+  return 0;
+}
+
+//////////////
+
+HOOPLE_MAIN(splitter_app, )
+