From 334697c68fe9008b15ed8172ff871039ac642131 Mon Sep 17 00:00:00 2001
From: ewt <devnull@localhost>
Date: Tue, 20 May 1997 16:16:54 +0000
Subject: [PATCH] Added :shescape query format tag

CVS patchset: 1649
CVS date: 1997/05/20 16:16:54
---
 CHANGES          |  2 ++
 docs/queryformat |  3 +++
 query.c          | 33 +++++++++++++++++++++++++++++++--
 3 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/CHANGES b/CHANGES
index 78a631c..24679c3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3,6 +3,8 @@
 	- fixed configure script to assume chown() doesn't follow symlinks
 	  if lchown() isn't available and configure is not being run as root
 	- more header file changes for AIX
+	- added :shescape query format type for strings, which prints strings
+	  which will survive a single level of shell expansion
 
 2.3.11 -> 2.4:
 	- changed RPMNLSDIR directories to and @datadir@ to better
diff --git a/docs/queryformat b/docs/queryformat
index 5fccc3d..3ad119b 100644
--- a/docs/queryformat
+++ b/docs/queryformat
@@ -118,3 +118,6 @@ name after the tag name. Here are some examples:
     rpm -q --queryformat \
 	"[%{REQUIRENAME} %{REQUIREFLAGS:depflags} %{REQUIREVERSION}\n]" \
 	vlock
+
+The :shescape may be used on plain strings to get a string which can pass
+through a single level of shell and give the original string.
diff --git a/query.c b/query.c
index 60d04d5..fd75ad0 100644
--- a/query.c
+++ b/query.c
@@ -38,6 +38,8 @@ static void printFileInfo(char * name, unsigned int size, unsigned short mode,
 			  unsigned int mtime, unsigned short rdev,
 			  char * owner, char * group, int uid, int gid,
 			  char * linkto);
+static void formatString(const char * format, const char * str, 
+			 const char * how);
 
 static int queryHeader(Header h, char * chptr) {
     int count = 0;
@@ -127,6 +129,33 @@ static int queryPartial(Header h, char ** chptrptr, int * cntptr,
     return 0;
 }
 
+static void formatString(const char * format, const char * str, 
+			 const char * how) {
+    char * dst;
+    const char * src, * buf;
+
+    if (!strcmp(how, "shescape")) {
+	buf = dst = alloca(strlen(str) * 4 + 3);
+	*dst++ = '\'';
+	for (src = str; *src; src++) {
+	    if (*src == '\'') {
+		*dst++ = '\'';
+		*dst++ = '\\';
+		*dst++ = '\'';
+		*dst++ = '\'';
+	    } else {
+		*dst++ = *src;
+	    }
+	}
+	*dst++ = '\'';
+	*dst = '\0';
+    } else {
+	buf = str;
+    }
+
+    printf(format, buf);
+}
+
 static char * handleFormat(Header h, char * chptr, int * cntptr,
 				 int arrayNum) {
     const char * f = chptr;
@@ -235,13 +264,13 @@ static char * handleFormat(Header h, char * chptr, int * cntptr,
     switch (type) {
       case RPM_STRING_ARRAY_TYPE:
 	strcat(format, "s");
-	printf(format, ((char **) p)[arrayNum]);
+	formatString(format, ((char **) p)[arrayNum], how);
 	free(p);
 	break;
 
       case RPM_STRING_TYPE:
 	strcat(format, "s");
-	printf(format, p);
+	formatString(format, p, how);
 	break;
 
       case RPM_CHAR_TYPE:
-- 
2.7.4