Merge pull request #1917 from xexyl/esde95-try

Improve 1995/esde/try.sh

1994/dodsond2/README.md

@@ -31,7 +31,7 @@ For more detailed information see [1994 dodsond2 in bugs.md](/bugs.md#1994-dodso
 ## Alternate code:
 
 This version allows you to choose how many arrows to start with, instead of the
-default 0. If one tried specifying a value < 0 it will set it to 0.
+default 0. If one tries specifying a value < 0 it will set it to 0.
 
 Fun fact: this version helped uncover and fix a bug that prevented the entry
 from working in some cases.

1994/ldb/README.md

@@ -28,11 +28,7 @@ some_command | ./ldb
 ## Try:
 
 ```sh
-./ldb < /etc/passwd
+./try.sh
-
-printf "The International Obfuscated C Code Contest\n
-	Best One-liner\n
-	by Laurion Burchall" | ./ldb
 ```
 
 

1994/ldb/try.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 1994/ldb
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+ldb_file()
+{
+    if [[ "$#" != 1 ]]; then
+	echo "$0: ldb_file() expects 1 arg, got $#" 1>&2
+	return
+    fi
+    read -r -n 1 -p "Press any key to run: ./ldb < $1: "
+    echo 1>&2
+    ./ldb < "$1" | sed '/^$/d'
+    echo 1>&2
+}
+
+ldb_ioccc()
+{
+    echo "$ printf \"The International Obfuscated C Code Contest\\nBest One-liner\\nby Laurion Burchall\" | ./ldb"
+    read -r -n 1 -p "Press any key to continue: "
+    echo 1>&2
+    printf "The International Obfuscated C Code Contest\nBest One-liner\nby Laurion Burchall" | ./ldb | sed '/^$/d'
+    echo 1>&2
+}
+
+for i in $(seq 1 5); do
+    ldb_file /etc/passwd
+    ldb_ioccc
+    ldb_file ldb.c
+    ldb_file README.md
+done

1994/schnitzi/.gitignore

@@ -8,6 +8,11 @@ prog.orig
 schnitzi
 schnitzi2
 schnitzi2.c
+schnitzi3
+schnitzi3.c
 schnitzi.alt
 schnitzi.alt2
 schnitzi.orig
+try1.txt
+try2.txt
+try3.txt

1994/schnitzi/Makefile

@@ -39,7 +39,7 @@ include ../../var.mk
 # Common C compiler warnings to silence
 #
 CSILENCE= -Wno-deprecated-declarations -Wno-error -Wno-implicit-function-declaration \
-	-Wno-strict-prototypes
+	-Wno-strict-prototypes -Wno-implicit-int
 
 # Common C compiler warning flags
 #

1994/schnitzi/README.md

@@ -31,12 +31,7 @@ For more detailed information see [1994 schnitzi in bugs.md](/bugs.md#1994-schni
 ## Try:
 
 ```sh
-./schnitzi < /etc/motd 2>/dev/null
+./try.sh
-./schnitzi < /etc/passwd 2>/dev/null
-
-./schnitzi < schnitzi.c > schnitzi2.c 2>/dev/null
-make schnitzi2
-./schnitzi2 < README.md
 ```
 
 
@@ -65,6 +60,13 @@ Use `schnitzi.alt` and `schnitzi.alt2` as you would `schnitzi` above except that
 feeding the source code to it will not work right.
 
 
+### Alternate try:
+
+```sh
+./try.alt.sh
+```
+
+
 ## Judges' remarks:
 
 Try:
@@ -77,6 +79,9 @@ Compare the output of the program with its source.  Sure the output
 is different, but there is more than meets the `diff`'s eye.  Can you
 find out why?
 
+You might also wish to redirect the output to another file,
+compile it and compare how it works to the original code.
+
 
 ## Author's remarks:
 
@@ -92,14 +97,14 @@ line; for instance, for the file 'info', the program
 would be run as follows:
 
 ```sh
-schnitzi < info
+./schnitzi < info
 ```
 
 The program generates interesting results when its source file is
 used as input:
 
 ```sh
-schnitzi < schnitzi.c
+./schnitzi < schnitzi.c
 ```
 
 The result of this command is a program which does the exact same

1994/schnitzi/try.alt.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#
+# try.alt.sh - demonstrate IOCCC winner 1994/schnitzi alt code
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" alt >/dev/null || exit 1
+
+
+read -r -n 1 -p "Press any key to run: ./schnitzi.alt < README.md (space = next page, q = quit): "
+echo 1>&2
+./schnitzi.alt < README.md | less -rEXF
+echo 1>&2
+
+echo "$ ./schnitzi.alt2 < schnitzi.alt2.c | diff - schnitzi.c" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
+echo 1>&2
+./schnitzi.alt2 < schnitzi.alt2.c | diff - schnitzi.c
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./schnitzi.alt2 < README.md (space = next page, q = quit): "
+echo 1>&2
+./schnitzi.alt2 < README.md
+echo 1>&2

1994/schnitzi/try.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 1994/schnitzi
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+
+read -r -n 1 -p "Press any key to run: ./schnitzi < schnitzi.c > schnitzi2.c: "
+echo 1>&2
+./schnitzi < schnitzi.c > schnitzi2.c 2>/dev/null
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: make schnitzi2: "
+echo 1>&2
+make schnitzi2
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./schnitzi2 < schnitzi2.c > schnitzi3.c: "
+echo 1>&2
+./schnitzi2 < schnitzi2.c > schnitzi3.c 2>/dev/null
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: make schnitzi3: "
+echo 1>&2
+make schnitzi3
+echo 1>&2
+
+
+read -r -n 1 -p "Press any key to run: diff3 schnitzi.c schnitzi2.c schnitzi3.c (space = next page, q = quit): "
+echo 1>&2
+diff3 schnitzi.c schnitzi2.c schnitzi3.c | less -rEXF
+echo 1>&2
+
+read -r -n 1 -p "Press any key to show try.txt: "
+echo 1>&2
+cat try.txt
+echo 1>&2
+
+rm -f try1.txt try2.txt try3.txt
+read -r -n 1 -p "Press any key to run: ./schnitzi < try.txt | tee try1.txt (space = next page, q = quit): "
+echo 1>&2
+./schnitzi < try.txt 2>/dev/null | tee try1.txt
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./schnitzi2 < try.txt | tee try2.txt (space = next page, q = quit): "
+echo 1>&2
+./schnitzi2 < try.txt 2>/dev/null | tee try2.txt
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./schnitzi3 < try.txt | tee try3.txt (space = next page, q = quit): "
+echo 1>&2
+./schnitzi3 < try.txt 2>/dev/null | tee try3.txt
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: diff3 try1.txt try2.txt try3.txt: "
+echo 1>&2
+diff3 try1.txt try2.txt try3.txt && echo "All three files are the same!"
+echo 1>&2

1994/schnitzi/try.txt

@@ -0,0 +1 @@
+1994/schnitzi IOCCC winner test file.

1995/dodsond1/try.sh

@@ -17,8 +17,12 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
-echo "$ cat try.this.txt"
+read -r -n 1 -p "Press any key to show try.this.txt: "
+echo 1>&2
 cat try.this.txt
+echo 1>&2
 
-echo "$ ./dodsond1 < try.this.txt"
+read -r -n 1 -p "Press any key to run: ./dodsond1 < try.this.txt: "
+echo 1>&2
 ./dodsond1 < try.this.txt
+echo 1>&2

1995/esde/try.sh

@@ -15,13 +15,27 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
-echo "$ ./esde esde.data Johanson"
+read -r -n 1 -p "Press any key to show esde.data: "
+echo 1>&2
+cat esde.data
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./esde esde.data Johanson: "
+echo 1>&2
 ./esde esde.data Johanson
-echo
+echo 1>&2
 
-echo "$ ./esde esde.data2 read"
+read -r -n 1 -p "Press any key to show esde.data2: "
+echo 1>&2
+cat esde.data2
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: ./esde esde.data2 read: "
+echo 1>&2
 ./esde esde.data2 read
-echo
+echo 1>&2
 
-echo "$ ./esde README.md date"
+read -r -n 1 -p "Press any key to run: ./esde README.md date: "
+echo 1>&2
 ./esde README.md date
+echo 1>&2

thanks-for-help.md

@@ -1903,7 +1903,7 @@ entries that actually did not work because of missing or incorrect prototypes).
 ## <a name="1994_ldb"></a>[1994/ldb](/1994/ldb/ldb.c) ([README.md](/1994/ldb/README.md]))
 
 [Cody](#cody) fixed this so it would compile and work with modern compilers. The problem
-was that `srand()` returns void but it was used in a `||` expression. Thus the
+was that `srand()` returns `void` but it was used in a `||` expression. Thus the
 comma operator was needed.
 
 Cody also fixed it for clang under Linux which objected to incompatible pointer
@@ -1913,14 +1913,15 @@ but what was being passed to it is an `int`).
 Cody also changed the entry to use `fgets(3)` instead of `gets(3)`. This one has
 a minor annoyance in that it now prints a newline after the output but this
 seems like a worthy compromise for preventing the interspersed output in macOS
-and at the same time it's safer (fixing it to not have the extra newline is more
+and at the same time it's safer and allows for parsing file with longer lines.
-problematic than it's worth and in macOS another line of output would be shown
+Fixing it it to not have the extra newline is more problematic than it's worth,
-without the change anyway and the difference is that now it's just a blank line
+in macOS another line of output would be shown without the change anyway -
-rather than an annoying warning).
+unless `2>/dev/null` - and the difference is that now it's just a blank line
+rather than an annoying warning. A subtlety about this fix: if a line is greater
+than 231 in length if the program chooses that line it might print the first 231
+characters or it might print (up to) the next 231 characters and so on.
 
-A subtlety about this fix: if a line is greater than 231 in length if the
+Cody also added the [try.sh](/1994/ldb/try.sh) script.
-program chooses that line it might print the first 231 characters or it might
-print (up to) the next 231 characters and so on.
 
 
 ## <a name="1994_schnitzi"></a>[1994/schnitzi](/1994/schnitzi/schnitzi.c) ([README.md](/1994/schnitzi/README.md]))
@@ -1935,11 +1936,15 @@ bugs.md](/bugs.md#1994-schnitzi).
 
 The purpose for these versions it both demonstrate how the magic works behind it
 and to help others, should they wish, get the code to work with `fgets(3)`, with
-or without an increase in buffer size. See [1994/schnitzi in
+or without an increase in buffer size. Note that without this feeding longer
+files, say the README.md file, will crash the program. See [1994/schnitzi in
 bugs.md](/bugs.md#1994-schnitzi) where Cody also explains the magic for more
 details. Later on, if nobody takes up the task, Cody might resume it, but for
 now there is more important work to do so that the next contest can run.
 
+Cody also added the [try.sh](/1994/schnitzi/try.sh) and
+[try.alt.sh](/1994/schnitzi/try.alt.sh) scripts.
+
 
 ## <a name="1994_shapiro"></a>[1994/shapiro](/1994/shapiro/shapiro.c) ([README.md](/1994/shapiro/README.md]))