shithub: jbig2

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jbig2dec: Separate command line tool error callback state from parameters.

--- a/jbig2dec.c

+++ b/jbig2dec.c

@@ -65,11 +65,15 @@

     SHA1_CTX *hash_ctx;

     char *output_filename;

     jbig2dec_format output_format;

+} jbig2dec_params_t;

+

+typedef struct {

+    int verbose;

     char *last_message;

     Jbig2Severity severity;

     char *type;

     long repeats;

-} jbig2dec_params_t;

+} jbig2dec_error_callback_state_t;

 static int print_version(void);

 static int print_usage(void);

@@ -251,7 +255,7 @@

 static void

 error_callback(void *error_callback_data, const char *buf, Jbig2Severity severity, int32_t seg_idx)

 {

-    jbig2dec_params_t *params = (jbig2dec_params_t *) error_callback_data;

+    jbig2dec_error_callback_state_t *state = (jbig2dec_error_callback_state_t *) error_callback_data;

     char *type;

     char segment[22];

     int len;

@@ -259,17 +263,17 @@

     switch (severity) {

     case JBIG2_SEVERITY_DEBUG:

-        if (params->verbose < 3)

+        if (state->verbose < 3)

             return;

         type = "DEBUG";

         break;

     case JBIG2_SEVERITY_INFO:

-        if (params->verbose < 2)

+        if (state->verbose < 2)

             return;

         type = "info";

         break;

     case JBIG2_SEVERITY_WARNING:

-        if (params->verbose < 1)

+        if (state->verbose < 1)

             return;

         type = "WARNING";

         break;

@@ -302,34 +306,34 @@

         return;

     }

-    if (params->last_message != NULL && strcmp(message, params->last_message)) {

-        if (params->repeats > 1)

-            fprintf(stderr, "jbig2dec %s last message repeated %ld times\n", params->type, params->repeats);

+    if (state->last_message != NULL && strcmp(message, state->last_message)) {

+        if (state->repeats > 1)

+            fprintf(stderr, "jbig2dec %s last message repeated %ld times\n", state->type, state->repeats);

         fprintf(stderr, "%s\n", message);

-        free(params->last_message);

-        params->last_message = message;

-        params->severity = severity;

-        params->type = type;

-        params->repeats = 0;

-    } else if (params->last_message != NULL) {

-        params->repeats++;

-        if (params->repeats % 1000000 == 0)

-            fprintf(stderr, "jbig2dec %s last message repeated %ld times so far\n", params->type, params->repeats);

+        free(state->last_message);

+        state->last_message = message;

+        state->severity = severity;

+        state->type = type;

+        state->repeats = 0;

+    } else if (state->last_message != NULL) {

+        state->repeats++;

+        if (state->repeats % 1000000 == 0)

+            fprintf(stderr, "jbig2dec %s last message repeated %ld times so far\n", state->type, state->repeats);

         free(message);

-    } else if (params->last_message == NULL) {

+    } else if (state->last_message == NULL) {

         fprintf(stderr, "%s\n", message);

-        params->last_message = message;

-        params->severity = severity;

-        params->type = type;

-        params->repeats = 0;

+        state->last_message = message;

+        state->severity = severity;

+        state->type = type;

+        state->repeats = 0;

     }

 }

 static void

-flush_errors(jbig2dec_params_t *params)

+flush_errors(jbig2dec_error_callback_state_t *state)

 {

-    if (params->repeats > 1) {

-        fprintf(stderr, "jbig2dec last message repeated %ld times\n", params->repeats);

+    if (state->repeats > 1) {

+        fprintf(stderr, "jbig2dec last message repeated %ld times\n", state->repeats);

     }

 }

@@ -426,6 +430,7 @@

     Jbig2Ctx *ctx = NULL;

     uint8_t buf[4096];

     jbig2dec_params_t params;

+    jbig2dec_error_callback_state_t error_callback_state;

     int filearg;

     int result = 1;

     int code;

@@ -437,8 +442,6 @@

     params.output_filename = NULL;

     params.output_format = jbig2dec_format_none;

     params.embedded = 0;

-    params.last_message = NULL;

-    params.repeats = 0;

     filearg = parse_options(argc, argv, &params);

@@ -487,7 +490,11 @@

             goto cleanup;

         }

-        ctx = jbig2_ctx_new(NULL, (Jbig2Options)(f_page != NULL || params.embedded ? JBIG2_OPTIONS_EMBEDDED : 0), NULL, error_callback, &params);

+        error_callback_state.verbose = params.verbose;

+        error_callback_state.last_message = NULL;

+        error_callback_state.repeats = 0;

+

+        ctx = jbig2_ctx_new(NULL, (Jbig2Options)(f_page != NULL || params.embedded ? JBIG2_OPTIONS_EMBEDDED : 0), NULL, error_callback, &error_callback_state);

         if (ctx == NULL) {

             fclose(f);

             if (f_page)

@@ -510,7 +517,7 @@

         if (f_page != NULL) {

             Jbig2GlobalCtx *global_ctx = jbig2_make_global_ctx(ctx);

-            ctx = jbig2_ctx_new(NULL, JBIG2_OPTIONS_EMBEDDED, global_ctx, error_callback, &params);

+            ctx = jbig2_ctx_new(NULL, JBIG2_OPTIONS_EMBEDDED, global_ctx, error_callback, &error_callback_state);

             if (ctx != NULL) {

                 for (;;) {

                     int n_bytes = fread(buf, 1, sizeof(buf), f_page);

@@ -586,7 +593,6 @@

                 write_document_hash(&params);

         }

-

     }                           /* end params.mode switch */

     /* fin */

@@ -593,10 +599,10 @@

     result = 0;

 cleanup:

-    flush_errors(&params);

+    flush_errors(&error_callback_state);

     jbig2_ctx_free(ctx);

-    if (params.last_message)

-        free(params.last_message);

+    if (error_callback_state.last_message)

+        free(error_callback_state.last_message);

     if (params.output_filename)

         free(params.output_filename);

     if (params.hash)