[lit] Implement 'cat' command for internal shell

Fixes PR36449

Patch by Chamal de Silva

Differential Revision: https://reviews.llvm.org/D43501

llvm-svn: 328563

4 files changed, 90 insertions, 0 deletions

diff --git a/llvm/utils/lit/tests/Inputs/shtest-shell/cat-error-0.txt b/llvm/utils/lit/tests/Inputs/shtest-shell/cat-error-0.txt
new file mode 100644
index 00000000000..690bc1e9e92
--- /dev/null
+++ b/llvm/utils/lit/tests/Inputs/shtest-shell/cat-error-0.txt
@@ -0,0 +1,3 @@
+# Check error on an unsupported option for cat .
+#
+# RUN: cat -b temp1.txt
diff --git a/llvm/utils/lit/tests/Inputs/shtest-shell/cat-error-1.txt b/llvm/utils/lit/tests/Inputs/shtest-shell/cat-error-1.txt
new file mode 100644
index 00000000000..5344707e966
--- /dev/null
+++ b/llvm/utils/lit/tests/Inputs/shtest-shell/cat-error-1.txt
@@ -0,0 +1,3 @@
+# Check error on a unsupported cat (Unable to find input file).
+#
+# RUN: cat temp1.txt
diff --git a/llvm/utils/lit/tests/Inputs/shtest-shell/cat_nonprinting.bin b/llvm/utils/lit/tests/Inputs/shtest-shell/cat_nonprinting.bin
new file mode 100644
index 00000000000..b4af9817b35
--- /dev/null
+++ b/llvm/utils/lit/tests/Inputs/shtest-shell/cat_nonprinting.bin
diff --git a/llvm/utils/lit/tests/Inputs/shtest-shell/valid-shell.txt b/llvm/utils/lit/tests/Inputs/shtest-shell/valid-shell.txt
index d5cbf863e73..6cc83e839cf 100644
--- a/llvm/utils/lit/tests/Inputs/shtest-shell/valid-shell.txt
+++ b/llvm/utils/lit/tests/Inputs/shtest-shell/valid-shell.txt
@@ -85,3 +85,87 @@
 # RUN: cd %T/dir1 && echo "hello" > temp1.txt
 # RUN: cd %T/dir2 && echo "hello" > temp2.txt
 # RUN: diff temp2.txt ../dir1/temp1.txt
+#
+# Check cat command with single file.
+#
+# RUN: rm -rf %T/testCat
+# RUN: mkdir -p %T/testCat
+# RUN: echo "abcdefgh" > %T/testCat/temp.write
+# RUN: cat %T/testCat/temp.write > %T/testCat/tempcat.write
+# RUN: "%{python}" %S/check_path.py file %T/testCat/tempcat.write > %T/testCat/path.out
+# RUN: FileCheck --check-prefix=FILE-EXISTS < %T/testCat/path.out %s
+# RUN: FileCheck --check-prefix=CAT-OUTPUT < %T/testCat/tempcat.write %s
+# FILE-EXISTS: True
+# CAT-OUTPUT: abcdefgh
+#
+# Check cat command with multiple files.
+#
+# RUN: rm -rf %T/testCat
+# RUN: mkdir -p %T/testCat
+# RUN: echo "abcdefgh" > %T/testCat/temp1.write
+# RUN: echo "efghijkl" > %T/testCat/temp2.write
+# RUN: echo "mnopqrst" > %T/testCat/temp3.write
+# RUN: cat %T/testCat/temp1.write %T/testCat/temp2.write %T/testCat/temp3.write > %T/testCat/tempmulticat.write
+# RUN: "%{python}" %S/check_path.py file %T/testCat/tempmulticat.write > %T/testCat/path.out
+# RUN: FileCheck --check-prefix=MULTI-FILE-EXISTS < %T/testCat/path.out %s
+# RUN: FileCheck --check-prefix=MULTI-CAT-OUTPUT < %T/testCat/tempmulticat.write %s
+# MULTI-FILE-EXISTS: True
+# MULTI-CAT-OUTPUT: abcdefgh
+# MULTI-CAT-OUTPUT-NEXT: efghijkl
+# MULTI-CAT-OUTPUT-NEXT: mnopqrst
+#
+# Check cat command with multiple files and piped output to FileCheck.
+#
+# RUN: rm -rf %T/testCat
+# RUN: mkdir -p %T/testCat
+# RUN: echo "abcdefgh" > %T/testCat/temp1.write
+# RUN: echo "efghijkl" > %T/testCat/temp2.write
+# RUN: cat %T/testCat/temp1.write %T/testCat/temp2.write | FileCheck --check-prefix=PIPED-CAT-OUTPUT %s
+# PIPED-CAT-OUTPUT: abcdefgh
+# PIPED-CAT-OUTPUT-NEXT: efghijkl
+#
+# Check cat command with multiple files and glob expressions.
+#
+# RUN: rm -rf %T/testCat
+# RUN: mkdir -p %T/testCat
+# RUN: echo "cvbnm" > %T/testCat/temp1.write
+# RUN: echo "qwerty" > %T/testCat/temp2.write
+# RUN: cat %T/testCat/*.write | FileCheck --check-prefix=GLOB-CAT-OUTPUT %s
+# GLOB-CAT-OUTPUT: cvbnm
+# GLOB-CAT-OUTPUT-NEXT: qwerty
+#
+# Check cat command with -v option
+#
+# RUN: cat -v %S/cat_nonprinting.bin | FileCheck --check-prefix=NP-CAT-OUTPUT %s
+# NP-CAT-OUTPUT: ^@^A^B^C^D^E^F^G	^H
+# NP-CAT-OUTPUT-NEXT: ^K^L^M^N^O^P^Q^R^S
+# NP-CAT-OUTPUT-NEXT: ^T^U^V^W^X^Y^Z^[^\^]^^^_ !"#$%&'
+# NP-CAT-OUTPUT-NEXT: ()*+,-./0123456789:;
+# NP-CAT-OUTPUT-NEXT: <=>?@ABCDEFGHIJKLMNO
+# NP-CAT-OUTPUT-NEXT: PQRSTUVWXYZ[\]^_`abc
+# NP-CAT-OUTPUT-NEXT: defghijklmnopqrstuvw
+# NP-CAT-OUTPUT-NEXT: xyz{|}~^?M-^@M-^AM-^BM-^CM-^DM-^EM-^FM-^GM-^HM-^IM-^JM-^K
+# NP-CAT-OUTPUT-NEXT: M-^LM-^MM-^NM-^OM-^PM-^QM-^RM-^SM-^TM-^UM-^VM-^WM-^XM-^YM-^ZM-^[M-^\M-^]M-^^M-^_
+# NP-CAT-OUTPUT-NEXT: M- M-!M-"M-#M-$M-%M-&M-'M-(M-)M-*M-+M-,M--M-.M-/M-0M-1M-2M-3
+# NP-CAT-OUTPUT-NEXT: M-4M-5M-6M-7M-8M-9M-:M-;M-<M-=M->M-?M-@M-AM-BM-CM-DM-EM-FM-G
+# NP-CAT-OUTPUT-NEXT: M-HM-IM-JM-KM-LM-MM-NM-OM-PM-QM-RM-SM-TM-UM-VM-WM-XM-YM-ZM-[
+# NP-CAT-OUTPUT-NEXT: M-\M-]M-^M-_M-`M-aM-bM-cM-dM-eM-fM-gM-hM-iM-jM-kM-lM-mM-nM-o
+# NP-CAT-OUTPUT-NEXT: M-pM-qM-rM-sM-tM-uM-vM-wM-xM-yM-zM-{M-|M-}M-~M-^?
+#
+# Check cat command with -show-nonprinting option
+#
+# RUN: cat --show-nonprinting %S/cat_nonprinting.bin | FileCheck --check-prefix=NPLONG-CAT-OUTPUT %s
+# NPLONG-CAT-OUTPUT: ^@^A^B^C^D^E^F^G	^H
+# NPLONG-CAT-OUTPUT-NEXT: ^K^L^M^N^O^P^Q^R^S
+# NPLONG-CAT-OUTPUT-NEXT: ^T^U^V^W^X^Y^Z^[^\^]^^^_ !"#$%&'
+# NPLONG-CAT-OUTPUT-NEXT: ()*+,-./0123456789:;
+# NPLONG-CAT-OUTPUT-NEXT: <=>?@ABCDEFGHIJKLMNO
+# NPLONG-CAT-OUTPUT-NEXT: PQRSTUVWXYZ[\]^_`abc
+# NPLONG-CAT-OUTPUT-NEXT: defghijklmnopqrstuvw
+# NPLONG-CAT-OUTPUT-NEXT: xyz{|}~^?M-^@M-^AM-^BM-^CM-^DM-^EM-^FM-^GM-^HM-^IM-^JM-^K
+# NPLONG-CAT-OUTPUT-NEXT: M-^LM-^MM-^NM-^OM-^PM-^QM-^RM-^SM-^TM-^UM-^VM-^WM-^XM-^YM-^ZM-^[M-^\M-^]M-^^M-^_
+# NPLONG-CAT-OUTPUT-NEXT: M- M-!M-"M-#M-$M-%M-&M-'M-(M-)M-*M-+M-,M--M-.M-/M-0M-1M-2M-3
+# NPLONG-CAT-OUTPUT-NEXT: M-4M-5M-6M-7M-8M-9M-:M-;M-<M-=M->M-?M-@M-AM-BM-CM-DM-EM-FM-G
+# NPLONG-CAT-OUTPUT-NEXT: M-HM-IM-JM-KM-LM-MM-NM-OM-PM-QM-RM-SM-TM-UM-VM-WM-XM-YM-ZM-[
+# NPLONG-CAT-OUTPUT-NEXT: M-\M-]M-^M-_M-`M-aM-bM-cM-dM-eM-fM-gM-hM-iM-jM-kM-lM-mM-nM-o
+# NPLONG-CAT-OUTPUT-NEXT: M-pM-qM-rM-sM-tM-uM-vM-wM-xM-yM-zM-{M-|M-}M-~M-^?