scripts: adapt demo_common.sh and project_detection.sh to tf-psa-crypto

Signed-off-by: Valerio Setti <[email protected]>

scripts/project_detection.sh

@@ -9,25 +9,79 @@
 # help detect which project (Mbed TLS, TF-PSA-Crypto)
 # or which Mbed TLS branch they are in.
 
-# Project detection
+# Project detection.
+#
+# Both Mbed TLS and TF-PSA-Cryto repos have a "scripts/project_name.txt" file
+# which contains the name of the project. They are used in scripts to know in
+# which project/folder we're in.
+# This function accepts 2 parameters:
+# - $1: boolean value which defines the behavior in case
+#       "scripts/project_name.txt" is not found:
+#       - 1: exit with error message
+#       - 0: simply return an error
+# - $2: mandatory value which defined the root folder where to look for
+#       "scripts/project_name.txt".
 read_project_name_file () {
-    SCRIPT_DIR=$(pwd)
+    EXIT_IF_NOT_FOUND=$1
+    ROOT_PATH=$2
 
     PROJECT_NAME_FILE="scripts/project_name.txt"
 
-    if read -r PROJECT_NAME < "$PROJECT_NAME_FILE"; then :; else
-        echo "$PROJECT_NAME_FILE does not exist... Exiting..." >&2
-        exit 1
+    # Check if file exists.
+    if [ ! -f "$ROOT_PATH/$PROJECT_NAME_FILE" ]; then
+        if $EXIT_IF_NOT_FOUND ; then
+            echo "$ROOT_PATH/$PROJECT_NAME_FILE does not exist... Exiting..." >&2
+            exit 1
+        fi
+        # Simply return a failure in case we were asked not to fail in case of
+        # missing file.
+        return 1
+    fi
+
+    if read -r PROJECT_NAME < "$ROOT_PATH/$PROJECT_NAME_FILE"; then :; else
+        return 1
     fi
 }
 
+# Check if the current folder is the Mbed TLS root one.
+#
+# Warning: if this is not run from Mbed TLS/TF-PSA-Crypto root folder, the
+# script is terminated with a failure.
 in_mbedtls_repo () {
-    read_project_name_file
+    read_project_name_file true .
     test "$PROJECT_NAME" = "Mbed TLS"
 }
 
+# Check if the current folder is the TF-PSA-Crypto root one.
+#
+# Warning: if this is not run from Mbed TLS/TF-PSA-Crypto root folder, the
+# script is terminated with a failure.
 in_tf_psa_crypto_repo () {
-    read_project_name_file
+    read_project_name_file true .
+    test "$PROJECT_NAME" = "TF-PSA-Crypto"
+}
+
+# Check if $1 is an Mbed TLS root folder.
+#
+# Differently from in_mbedtls_repo() above, this can be run on any folder
+# without causing the script to exit.
+is_mbedtls_root() {
+    if ! read_project_name_file false $1 ; then
+        return 1
+    fi
+
+    test "$PROJECT_NAME" = "Mbed TLS"
+}
+
+# Check if $1 is a TF-PSA-Crypto root folder.
+#
+# Differently from in_tf_psa_crypto_repo() above, this can be run on any folder
+# without causing the script to exit.
+is_tf_psa_crypto_root() {
+    if ! read_project_name_file false $1 ; then
+        return 1
+    fi
+
     test "$PROJECT_NAME" = "TF-PSA-Crypto"
 }