Align the podman ps --filter behavior with docker

All of our filters worked exclusive resulting in `--filter status=created --filter status=exited` to return nothing.

In docker filters with the same key work inclusive with the only exception being `label` which is exclusive. Filters with different keys always work exclusive.

This PR aims to match the docker behavior with podman.

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

4 files changed, 30 insertions, 24 deletions

diff --git a/pkg/api/handlers/compat/containers_prune.go b/pkg/api/handlers/compat/containers_prune.go
index 397feac9a..2cfeebcce 100644
--- a/pkg/api/handlers/compat/containers_prune.go
+++ b/pkg/api/handlers/compat/containers_prune.go
@@ -16,7 +16,6 @@ func PruneContainers(w http.ResponseWriter, r *http.Request) {
 	var (
 		delContainers []string
 		space         int64
-		filterFuncs   []libpod.ContainerFilter
 	)
 	runtime := r.Context().Value("runtime").(*libpod.Runtime)
 	decoder := r.Context().Value("decoder").(*schema.Decoder)
@@ -28,15 +27,14 @@ func PruneContainers(w http.ResponseWriter, r *http.Request) {
 		utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String()))
 		return
 	}
+	filterFuncs := make([]libpod.ContainerFilter, 0, len(query.Filters))
 	for k, v := range query.Filters {
-		for _, val := range v {
-			generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, val, runtime)
-			if err != nil {
-				utils.InternalServerError(w, err)
-				return
-			}
-			filterFuncs = append(filterFuncs, generatedFunc)
+		generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, v, runtime)
+		if err != nil {
+			utils.InternalServerError(w, err)
+			return
 		}
+		filterFuncs = append(filterFuncs, generatedFunc)
 	}
 
 	// Libpod response differs
diff --git a/pkg/domain/infra/abi/containers.go b/pkg/domain/infra/abi/containers.go
index 855f9ece8..4b69ac74e 100644
--- a/pkg/domain/infra/abi/containers.go
+++ b/pkg/domain/infra/abi/containers.go
@@ -205,15 +205,13 @@ func (ic *ContainerEngine) ContainerStop(ctx context.Context, namesOrIds []strin
 }
 
 func (ic *ContainerEngine) ContainerPrune(ctx context.Context, options entities.ContainerPruneOptions) (*entities.ContainerPruneReport, error) {
-	var filterFuncs []libpod.ContainerFilter
+	filterFuncs := make([]libpod.ContainerFilter, 0, len(options.Filters))
 	for k, v := range options.Filters {
-		for _, val := range v {
-			generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, val, ic.Libpod)
-			if err != nil {
-				return nil, err
-			}
-			filterFuncs = append(filterFuncs, generatedFunc)
+		generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, v, ic.Libpod)
+		if err != nil {
+			return nil, err
 		}
+		filterFuncs = append(filterFuncs, generatedFunc)
 	}
 	return ic.pruneContainersHelper(filterFuncs)
 }
diff --git a/pkg/ps/ps.go b/pkg/ps/ps.go
index 96b2d754f..3dd7eb0c6 100644
--- a/pkg/ps/ps.go
+++ b/pkg/ps/ps.go
@@ -21,19 +21,17 @@ import (
 
 func GetContainerLists(runtime *libpod.Runtime, options entities.ContainerListOptions) ([]entities.ListContainer, error) {
 	var (
-		filterFuncs []libpod.ContainerFilter
-		pss         = []entities.ListContainer{}
+		pss = []entities.ListContainer{}
 	)
+	filterFuncs := make([]libpod.ContainerFilter, 0, len(options.Filters))
 	all := options.All || options.Last > 0
 	if len(options.Filters) > 0 {
 		for k, v := range options.Filters {
-			for _, val := range v {
-				generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, val, runtime)
-				if err != nil {
-					return nil, err
-				}
-				filterFuncs = append(filterFuncs, generatedFunc)
+			generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, v, runtime)
+			if err != nil {
+				return nil, err
 			}
+			filterFuncs = append(filterFuncs, generatedFunc)
 		}
 	}
 
@@ -43,7 +41,7 @@ func GetContainerLists(runtime *libpod.Runtime, options entities.ContainerListOp
 		all = true
 	}
 	if !all {
-		runningOnly, err := lpfilters.GenerateContainerFilterFuncs("status", define.ContainerStateRunning.String(), runtime)
+		runningOnly, err := lpfilters.GenerateContainerFilterFuncs("status", []string{define.ContainerStateRunning.String()}, runtime)
 		if err != nil {
 			return nil, err
 		}
diff --git a/pkg/util/utils.go b/pkg/util/utils.go
index 415fd169b..f6a084c00 100644
--- a/pkg/util/utils.go
+++ b/pkg/util/utils.go
@@ -6,6 +6,7 @@ import (
 	"os"
 	"os/user"
 	"path/filepath"
+	"regexp"
 	"strconv"
 	"strings"
 	"sync"
@@ -84,6 +85,17 @@ func StringInSlice(s string, sl []string) bool {
 	return false
 }
 
+// StringMatchRegexSlice determines if a given string matches one of the given regexes, returns bool
+func StringMatchRegexSlice(s string, re []string) bool {
+	for _, r := range re {
+		m, err := regexp.MatchString(r, s)
+		if err == nil && m {
+			return true
+		}
+	}
+	return false
+}
+
 // ImageConfig is a wrapper around the OCIv1 Image Configuration struct exported
 // by containers/image, but containing additional fields that are not supported
 // by OCIv1 (but are by Docker v2) - notably OnBuild.