Move mergeCommand to global process struct

Process.h

@@ -55,6 +55,35 @@ typedef enum ProcessField_ {
 
 struct Settings_;
 
+/* Holds information about regions of the cmdline that should be
+ * highlighted (e.g. program basename, delimiter, comm). */
+typedef struct ProcessCmdlineHighlight_ {
+   size_t offset; /* first character to highlight */
+   size_t length; /* How many characters to highlight, zero if unused */
+   int attr;      /* The attributes used to highlight */
+   int flags;     /* Special flags used for selective highlighting, zero for always */
+} ProcessCmdlineHighlight;
+
+/* ProcessMergedCommand is populated by Process_makeCommandStr: It
+ * contains the merged Command string, and the information needed by
+ * Process_writeCommand to color the string. str will be NULL for kernel
+ * threads and zombies */
+typedef struct ProcessMergedCommand_ {
+   char *str;                                  /* merged Command string */
+   size_t maxLen;                              /* maximum expected length of Command string */
+   size_t highlightCount;                      /* how many portions of cmdline to highlight */
+   ProcessCmdlineHighlight highlights[8];      /* which portions of cmdline to highlight */
+   bool separateComm : 1;                      /* whether comm is a separate field */
+   bool unmatchedExe : 1;                      /* whether exe matched with cmdline */
+   bool cmdlineChanged : 1;                    /* whether cmdline changed */
+   bool exeChanged : 1;                        /* whether exe changed */
+   bool commChanged : 1;                       /* whether comm changed */
+   bool prevMergeSet : 1;                      /* whether showMergedCommand was set */
+   bool prevPathSet : 1;                       /* whether showProgramPath was set */
+   bool prevCommSet : 1;                       /* whether findCommInCmdline was set */
+   bool prevCmdlineSet : 1;                    /* whether stripExeFromCmdline was set */
+} ProcessMergedCommand;
+
 typedef struct Process_ {
    /* Super object for emulated OOP */
    Object super;
@@ -200,6 +229,11 @@ typedef struct Process_ {
    unsigned int tree_right;
    unsigned int tree_depth;
    unsigned int tree_index;
+
+   /*
+    * Internal state for merged Command display
+    */
+   ProcessMergedCommand mergedCommand;
 } Process;
 
 typedef struct ProcessFieldData_ {