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gitapply.sh: Explicitly check for GNU Awk.

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This commit is contained in:
Sebastian Lackner 2015-06-20 16:01:04 +02:00
parent c361cbefb2
commit 6d10024c1e
1 changed files with 21 additions and 8 deletions
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29
patches/gitapply.sh
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@ -115,14 +115,27 @@ if [ "$nogit" -eq 0 ] && command -v git >/dev/null 2>&1; then
fi
# Detect BSD - we check this first to error out as early as possible
if gzip -V 2>&1 | grep "BSD" &> /dev/null; then
if gzip -V 2>&1 | grep -q "BSD"; then
echo "This script is not compatible with *BSD utilities. Please install git," >&2
echo "which provides the same functionality and will be used instead." >&2
exit 1
fi
# Check if GNU Awk is available
if ! command -v gawk >/dev/null 2>&1; then
if ! awk -V 2>/dev/null | grep -q "GNU Awk"; then
echo "This script requires GNU Awk (or alternatively git) to work properly." >&2
exit 1
fi
gawk()
{
awk "$@"
}
fi
# Check for missing depdencies
for dependency in awk cut dd du grep gzip hexdump patch sha1sum; do
for dependency in gawk cut dd du grep gzip hexdump patch sha1sum; do
if ! command -v "$dependency" >/dev/null 2>&1; then
echo "Missing dependency: $dependency - please install this program and try again." >&2
exit 1
@ -269,7 +282,7 @@ fi
# Go through the different patch sections
lastoffset=1
for offset in $(awk '/^diff --git /{ print FNR; }' "$tmpfile"); do
for offset in $(gawk '/^diff --git /{ print FNR; }' "$tmpfile"); do
# Check part between end of last patch and start of current patch
if [ "$lastoffset" -gt "$offset" ]; then
@ -283,7 +296,7 @@ for offset in $(awk '/^diff --git /{ print FNR; }' "$tmpfile"); do
# Find out the size of the patch header
tmpoffset=$((offset + 1))
tmpoffset=$(sed -n "$tmpoffset,\$ p" "$tmpfile" | awk "$awk_eof_header")
tmpoffset=$(sed -n "$tmpoffset,\$ p" "$tmpfile" | gawk "$awk_eof_header")
hdroffset=$((offset + tmpoffset))
# Parse all important fields of the header
@ -340,7 +353,7 @@ for offset in $(awk '/^diff --git /{ print FNR; }' "$tmpfile"); do
if [ "$patch_is_binary" -eq 0 ]; then
# Find end of textual patch
tmpoffset=$(sed -n "$hdroffset,\$ p" "$tmpfile" | awk "$awk_eof_textpatch")
tmpoffset=$(sed -n "$hdroffset,\$ p" "$tmpfile" | gawk "$awk_eof_textpatch")
lastoffset=$((hdroffset + tmpoffset - 1))
# Apply textual patch
@ -370,7 +383,7 @@ for offset in $(awk '/^diff --git /{ print FNR; }' "$tmpfile"); do
fi
# Find end of binary patch
tmpoffset=$(sed -n "$hdroffset,\$ p" "$tmpfile" | awk "$awk_eof_binarypatch")
tmpoffset=$(sed -n "$hdroffset,\$ p" "$tmpfile" | gawk "$awk_eof_binarypatch")
lastoffset=$((hdroffset + tmpoffset - 1))
# Special case - deleting the whole file
@ -393,7 +406,7 @@ for offset in $(awk '/^diff --git /{ print FNR; }' "$tmpfile"); do
# Decode base85 and gzip compression
tmpoffset=$((lastoffset - 1))
sed -n "$hdroffset,$tmpoffset p" "$tmpfile" | awk "$awk_decode_b85" | gzip -dc > "$literal_tmpfile" 2>/dev/null
sed -n "$hdroffset,$tmpoffset p" "$tmpfile" | gawk "$awk_decode_b85" | gzip -dc > "$literal_tmpfile" 2>/dev/null
if [ "$patch_binary_size" -ne "$(filesize "$literal_tmpfile")" ]; then
rm "$literal_tmpfile"
abort "Uncompressed binary patch has wrong size."
@ -428,7 +441,7 @@ for offset in $(awk '/^diff --git /{ print FNR; }' "$tmpfile"); do
patch_binary_complete=1
else break; fi
done < <(hexdump -v -e '32/1 "%02X" "\n"' "$delta_tmpfile" | awk "$awk_decode_binarypatch")
done < <(hexdump -v -e '32/1 "%02X" "\n"' "$delta_tmpfile" | gawk "$awk_decode_binarypatch")
rm "$delta_tmpfile"