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- /*
- * CDE - Common Desktop Environment
- *
- * Copyright (c) 1993-2012, The Open Group. All rights reserved.
- *
- * These libraries and programs are free software; you can
- * redistribute them and/or modify them under the terms of the GNU
- * Lesser General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * These libraries and programs are distributed in the hope that
- * they will be useful, but WITHOUT ANY WARRANTY; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU Lesser General Public License for more
- * details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with these libraries and programs; if not, write
- * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
- * Floor, Boston, MA 02110-1301 USA
- */
- // $XConsortium: core_fstream.C /main/4 1996/10/04 10:47:25 drk $
- #include <stdlib.h>
- #include <string.h>
- void filebuf_exam_test1()
- {
- fprintf(stderr, "fstream test1 : read\n");
- fstream fb("stream_test.read", ios::in|ios::out);
- char buf[10];
- for ( int i=0; i<2; i++ ) {
- fb.read(buf, 4);
- fprintf(stderr, "buf[0]=%c\n", buf[0]);
- fprintf(stderr, "buf[1]=%c\n", buf[1]);
- fprintf(stderr, "buf[2]=%c\n", buf[2]);
- fprintf(stderr, "buf[3]=%c\n", buf[3]);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- }
- }
- void filebuf_exam_test2()
- {
- fprintf(stderr, "fstream test2 : write \n");
- fstream fb("/tmp/stream_test.write", ios::in|ios::out|ios::trunc);
- char* buf = "abcdefghijklmnopq";
- for ( int i=0; i<2; i++ ) {
- fb.write(buf+i*4, 4);
- }
- system("cmp stream_test.write /tmp/stream_test.write");
- system("rm /tmp/stream_test.write");
- }
- void filebuf_exam_test3()
- {
- fprintf(stderr, "fstream test3 : getline\n");
- fstream fb("stream_test.getline", ios::in|ios::out);
- char buf[100];
- while ( fb.getline(buf, 100) ) {
- fprintf(stderr, "buf=%s\n", buf);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- }
- }
- void filebuf_exam_test4()
- {
- fprintf(stderr, "fstream test4 : word counting\n");
- fstream fb("stream_test.mobydick", ios::in);
- char buf[50];
- char largest[50];
- int curlen, max = -1, cnt = 0;
- while ( fb >> buf ) {
- curlen = strlen(buf);
- ++cnt;
- if ( curlen > max ) {
- max = curlen;
- memcpy(largest, buf, strlen(buf));
- }
- }
- fprintf(stderr, "# of words read is = %d\n", cnt);
- fprintf(stderr, "the longest word has a length of = %d\n", max);
- fprintf(stderr, "the longest word is = %s\n", largest);
- }
- void filebuf_exam_test5()
- {
- fprintf(stderr, "fstream test 5: (extraction)\n");
- fstream fb("stream_test.extraction", ios::in|ios::out);
- int x;
- long y;
- char c;
- unsigned short u;
- unsigned int v;
- // read
- // int long char (u)short (u)int
- fb >> x; fprintf(stderr, "x=%d\n", x);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- fb >> y; fprintf(stderr, "y=%ld\n", y);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- fb >> c; fprintf(stderr, "c=%c\n", c);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- fb >> u; fprintf(stderr, "u=%d\n", u);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- fb >> v; fprintf(stderr, "v=%d\n", v);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- }
- void filebuf_exam_test6()
- {
- fprintf(stderr, "fstream test 6: (mixed insertion and extraction [1]) \n");
- system("cp stream_test.mixed_ins_extr /tmp/stream_test.mixed_ins_extr");
- fstream fb("/tmp/stream_test.mixed_ins_extr", ios::in|ios::out);
- int x;
- long y;
- char c;
- unsigned short u;
- unsigned int v;
- // read
- // int long char (u)short (u)int
- fb >> x; fprintf(stderr, "x=%d\n", x);
- fb >> y; fprintf(stderr, "y=%ld\n", y);
- c = '0'; fb << c;
- c = '1'; fb << c;
- system("diff stream_test.mixed_ins_extr /tmp/stream_test.mixed_ins_extr");
- }
- void filebuf_exam_test7()
- {
- fprintf(stderr, "fstream test 7: (mixed insertion and extraction [2]) \n");
- system("cp stream_test.mixed_ins_extr.2 /tmp/stream_test.mixed_ins_extr.2");
- fstream fb("/tmp/stream_test.mixed_ins_extr.2", ios::in|ios::out|ios::trunc);
- int x = 1;
- long y = 2;
- char c;
- fb << x << y << "abcdefghijk";
- fb.seekg(9, ios::beg);
- fb >> c; fprintf(stderr, "c=%c\n", c);
- fb >> c; fprintf(stderr, "c=%c\n", c);
- system("diff /tmp/stream_test.mixed_ins_extr.2 stream_test.mixed_ins_extr.2");
- system("rm /tmp/stream_test.mixed_ins_extr.2");
- }
- void filebuf_exam_test8()
- {
- fprintf(stderr, "fstream test 8: (seek and read) \n");
- fstream fb("stream_test.seek_and_read", ios::in|ios::out);
- fb.seekg(10, ios::beg);
- char c;
- fb >> c; fprintf(stderr, "c=%c\n", c);
- fb >> c; fprintf(stderr, "c=%c\n", c);
- fb.seekg(20, ios::beg);
- fb >> c; fprintf(stderr, "c=%c\n", c);
- fb >> c; fprintf(stderr, "c=%c\n", c);
- }
- void filebuf_exam_test9()
- {
- fprintf(stderr, "fstream test 9: (append) \n");
- system("rm -f /tmp/stream_test.append");
- fstream fb("/tmp/stream_test.append", ios::app);
- fb << "lseek() sets the seek";
- fb << " pointer associated with the open";
- system("diff /tmp/stream_test.append stream_test.append");
- system("rm /tmp/stream_test.append");
- }
- void filebuf_exam_test10()
- {
- fprintf(stderr, "fstream test 10: (cerr) \n");
- fstream fb(2);
- fb << "cerr: lseek() sets the seek\n";
- fb << "cerr: pointer associated with the open\n";
- fstream fb1(1);
- fb1 << "cout::lseek() sets the seek\n";
- fb1 << "cout:: pointer associated with the open\n";
- }
- void filebuf_exam_test11(char* nm)
- {
- fprintf(stderr, "fstream test11 : getline (2)\n");
- fstream fb(nm, ios::in);
- char buf[100];
- while ( fb.getline(buf, 100) ) {
- fprintf(stderr, "buf=%s\n", buf);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- }
- }
- void filebuf_exam_test12()
- {
- fprintf(stderr, "fstream test12 : write (2)\n");
- fstream fb("/tmp/stream_test.write", ios::out);
- char* buf = "abcdefghijklmnopq";
- for ( int i=0; i<2; i++ ) {
- fb.write(buf+i*4, 4);
- }
- system("diff stream_test.write /tmp/stream_test.write");
- system("rm /tmp/stream_test.write");
- }
- void filebuf_exam_test13(char* nm, int pos)
- {
- fprintf(stderr, "fstream test13 : read (2)\n");
- fstream fb(nm, ios::in);
- char buf[8192];
- fb.seekg(pos, ios::beg);
- int len = 8192;
- fb.read(buf, len);
- fprintf(stderr, "len=%d\n", len);
- fprintf(stderr, "gcount=%d\n", fb.gcount());
- }
- void filebuf_exam_test14(char* nm)
- {
- fprintf(stderr, "fstream test14 : write (3)\n");
- fstream fb(nm, ios::out);
- char* buf = "abcdefghijklmnopq";
- for ( int i=0; i<2; i++ ) {
- fb.write(buf+i*4, 4);
- }
- }
- void usage(char** argv)
- {
- fprintf(stderr, "Usage: %s option\n", argv[0]);
- fprintf(stderr, "option = 1: read\n");
- fprintf(stderr, " 2: write\n");
- fprintf(stderr, " 3: getline\n");
- fprintf(stderr, " 4: word counting\n");
- fprintf(stderr, " 5: extraction\n");
- fprintf(stderr, " 6: mixed insertion/extraction [1]\n");
- fprintf(stderr, " 7: mixed insertion/extraction [2]\n");
- fprintf(stderr, " 8: seek and read\n");
- fprintf(stderr, " 9: append\n");
- fprintf(stderr, " 10: cerr\n");
- fprintf(stderr, " 11: getline (2). arguments: 11 filename\n");
- fprintf(stderr, " 12: write (2)\n");
- fprintf(stderr, " 13: read (2). arg: 13 filename offset\n");
- fprintf(stderr, " 14: write (3). arg: 14 filename\n");
- }
- int main(int argc, char** argv)
- {
- if ( argc <= 1 ) {
- usage(argv);
- return 1;
- }
- int i = atoi(argv[1]);
- switch (i) {
- case 1:
- filebuf_exam_test1();
- break;
- case 2:
- filebuf_exam_test2();
- break;
- case 3:
- filebuf_exam_test3();
- break;
- case 4:
- filebuf_exam_test4();
- break;
- case 5:
- filebuf_exam_test5();
- break;
- case 6:
- filebuf_exam_test6();
- break;
- case 7:
- filebuf_exam_test7();
- break;
- case 8:
- filebuf_exam_test8();
- break;
- case 9:
- filebuf_exam_test9();
- break;
- case 10:
- filebuf_exam_test10();
- break;
- case 11:
- if ( argc == 3 )
- filebuf_exam_test11(argv[2]);
- else
- usage(argv);
- break;
- case 12:
- filebuf_exam_test12();
- break;
- case 13:
- if ( argc == 4 )
- filebuf_exam_test13(argv[2], atoi(argv[3]));
- break;
- case 14:
- if ( argc == 3 )
- filebuf_exam_test14(argv[2]);
- break;
- default:
- filebuf_exam_test1();
- filebuf_exam_test2();
- filebuf_exam_test3();
- filebuf_exam_test4();
- filebuf_exam_test5();
- filebuf_exam_test6();
- filebuf_exam_test7();
- filebuf_exam_test8();
- filebuf_exam_test9();
- filebuf_exam_test10();
- filebuf_exam_test12();
- }
- return 0;
- }
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