Make some strings "const"

diff --git a/tig.c b/tig.c
index db862bf..c4d7589 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -146,7 +146,7 @@ struct commit {
  */
 
 static inline void
-string_ncopy(char *dst, char *src, int dstlen)
+string_ncopy(char *dst, const char *src, int dstlen)
 {
        strncpy(dst, src, dstlen - 1);
        dst[dstlen - 1] = 0;
@@ -458,7 +458,7 @@ enum line_type {
 };
 
 struct line_info {
-       char *line;             /* The start of line to match. */
+       const char *line;       /* The start of line to match. */
        int linelen;            /* Size of string to match. */
        int fg, bg, attr;       /* Color and text attributes for the lines. */
 };
@@ -624,15 +624,15 @@ init_colors(void)
 
 struct view {
        const char *name;       /* View name */
-       char *cmd_fmt;          /* Default command line format */
-       char *cmd_env;          /* Command line set via environment */
-       char *id;               /* Points to either of ref_{head,commit} */
+       const char *cmd_fmt;    /* Default command line format */
+       const char *cmd_env;    /* Command line set via environment */
+       const char *id;         /* Points to either of ref_{head,commit} */
        size_t objsize;         /* Size of objects in the line index */
 
        struct view_ops {
                /* What type of content being displayed. Used in the
                 * title bar. */
-               char *type;
+               const char *type;
                /* Draw one line; @lineno must be < view->height. */
                bool (*draw)(struct view *view, unsigned int lineno);
                /* Read one line; updates view->line. */
@@ -987,7 +987,7 @@ move_view(struct view *view, enum request request)
 static bool
 begin_update(struct view *view)
 {
-       char *id = view->id;
+       const char *id = view->id;
 
        if (opt_cmd[0]) {
                string_copy(view->cmd, opt_cmd);
@@ -996,7 +996,7 @@ begin_update(struct view *view)
                 * invalid so clear it. */
                view->ref[0] = 0;
        } else {
-               char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
+               const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
 
                if (snprintf(view->cmd, sizeof(view->cmd), format,
                             id, id, id, id, id) >= sizeof(view->cmd))
@@ -1125,7 +1125,7 @@ update_view(struct view *view)
                time_t secs = time(NULL) - view->start_time;
 
                if (view == VIEW(REQ_VIEW_HELP)) {
-                       char *msg = TIG_HELP;
+                       const char *msg = TIG_HELP;
 
                        if (view->lines == 0) {
                                /* Slightly ugly, but abusing view->ref keeps
@@ -1959,8 +1959,8 @@ get_refs(char *id)
 static int
 load_refs(void)
 {
-       char *cmd_env = getenv("TIG_LS_REMOTE");
-       char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
+       const char *cmd_env = getenv("TIG_LS_REMOTE");
+       const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
        FILE *pipe = popen(cmd, "r");
        char buffer[BUFSIZ];
        char *line;