chore: move strings to PROGMEM

.gitignore

@@ -6,6 +6,8 @@
 *.gcov
 vgcore.*
 
+.vscode/
+build/
 coverage/
 
 Doxyfile*

src/note-c/n_b64.c

@@ -79,11 +79,13 @@
  * Base64 encoder/decoder. Originally Apache file ap_base64.c
  */
 
+#include <avr/pgmspace.h>
 #include <string.h>
+
 #include "n_lib.h"
 
 /* aaaack but it's fast and const should make it shared text page. */
-static const unsigned char pr2six[256] = {
+static const unsigned char pr2six[256] PROGMEM = {
     /* ASCII table */
     64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
     64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
@@ -163,7 +165,7 @@ int JB64Decode(char *bufplain, const char *bufcoded)
     return nbytesdecoded;
 }
 
-static const char basis_64[] =
+static const char basis_64[] PROGMEM =
     "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 
 int JB64EncodeLen(int len)

src/note-c/n_cjson.c

@@ -144,7 +144,7 @@ static unsigned char* Jstrdup(const unsigned char* string)
         return NULL;
     }
 
-    length = strlen((const char*)string) + sizeof("");
+    length = strlen((const char*)string) + 1;
     copy = (unsigned char*)_Malloc(length);
     if (copy == NULL) {
         return NULL;
@@ -412,18 +412,18 @@ static Jbool print_number(const J * const item, printbuffer * const output_buffe
     /* This checks for NaN and Infinity */
     if ((d * 0) != 0) {
         char *nbuf = (char *) number_buffer;
-        strcpy(nbuf, "null");
+        strcpy(nbuf, c_null);
         length = strlen(nbuf);
     } else {
 #if !MINIMIZE_CLIB_DEPENDENCIES
         JNUMBER test;
         /* Try 15 decimal places of precision to avoid nonsignificant nonzero digits */
-        length = sprintf((char*)number_buffer, "%1.15g", d);
+        length = sprintf((char*)number_buffer, c_fmt_1_15g, d);
 
         /* Check whether the original double can be recovered */
-        if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || ((JNUMBER)test != d)) {
+        if ((sscanf((char*)number_buffer, c_fmt_lg, &test) != 1) || ((JNUMBER)test != d)) {
             /* If not, print with 17 decimal places of precision */
-            length = sprintf((char*)number_buffer, "%1.17g", d);
+            length = sprintf((char*)number_buffer, c_fmt_1_17g, d);
         }
 #else
         char *nbuf = (char *) number_buffer;
@@ -438,7 +438,7 @@ static Jbool print_number(const J * const item, printbuffer * const output_buffe
     }
 
     /* reserve appropriate space in the output */
-    output_pointer = ensure(output_buffer, (size_t)length + sizeof(""));
+    output_pointer = ensure(output_buffer, (size_t)length + 1);
     if (output_pointer == NULL) {
         return false;
     }
@@ -870,7 +870,7 @@ static parse_buffer *skip_utf8_bom(parse_buffer * const buffer)
         return NULL;
     }
 
-    if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), "\xEF\xBB\xBF", 3) == 0)) {
+    if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), c_utf8_bom, 3) == 0)) {
         buffer->offset += 3;
     }
 
@@ -1003,15 +1003,15 @@ static unsigned char *print(const J * const item, Jbool format)
 N_CJSON_PUBLIC(char *) JPrint(const J *item)
 {
     if (item == NULL) {
-        return (char *)"";
+        return (char *)c_nullstring;
     }
     return (char*)print(item, true);
 }
 
 N_CJSON_PUBLIC(char *) JPrintUnformatted(const J *item)
 {
     if (item == NULL) {
-        return (char *)"";
+        return (char *)c_nullstring;
     }
     return (char*)print(item, false);
 }
@@ -1021,7 +1021,7 @@ N_CJSON_PUBLIC(char *) JPrintBuffered(const J *item, int prebuffer, Jbool fmt)
     printbuffer p = { 0, 0, 0, 0, 0, 0 };
 
     if (item == NULL) {
-        return (char *)"";
+        return (char *)c_nullstring;
     }
 
     if (prebuffer < 0) {

src/note-c/n_cjson_helpers.c

@@ -106,7 +106,7 @@ bool JBoolValue(J *item)
 char *JStringValue(J *item)
 {
     if (item == NULL) {
-        return (char *)"";
+        return (char *)c_nullstring;
     }
     return item->valuestring;
 }
@@ -392,7 +392,7 @@ bool JGetBinaryFromObject(J *rsp, const char *fieldName, uint8_t **retBinaryData
 const char *JGetItemName(const J * item)
 {
     if (item == NULL || item->string == NULL) {
-        return "";
+        return c_nullstring;
     }
     return item->string;
 }
@@ -494,23 +494,23 @@ char *JAllocString(uint8_t *buffer, uint32_t len)
 const char *JType(J *item)
 {
     if (item == NULL) {
-        return "";
+        return c_nullstring;
     }
     switch (item->type & 0xff) {
     case JTrue:
     case JFalse:
-        return "bool";
+        return c_bool;
     case JNULL:
-        return "null";
+        return c_null;
     case JNumber:
-        return "number";
+        return c_number;
     case JRaw:
     case JString:
-        return "string";
+        return c_string;
     case JObject:
-        return "object";
+        return c_object;
     case JArray:
-        return "array";
+        return c_array;
     }
-    return "invalid";
+    return c_invalid;
 }

src/note-c/n_const.c

@@ -11,18 +11,214 @@
  *
  */
 
+#include <avr/pgmspace.h>
+
 #include "n_lib.h"
 
-const char *c_null = "null";
-const char *c_false = "false";
-const char *c_true = "true";
-const char *c_nullstring = "";
-const char *c_newline = "\r\n";
-const char *c_mem = "mem";
-const char *c_iotimeout = "timeout {io}";
-const char *c_err = "err";
-const char *c_req = "req";
-const char *c_cmd = "cmd";
-const char *c_bad = "bad";
-const char *c_iobad = "bad {io}";
-const char *c_ioerr = "{io}";
+const char c_agent[] PROGMEM = "agent";
+const char c_align[] PROGMEM = "align";
+const char c_arch_arc32[] PROGMEM = "arc32";
+const char c_arch_avr[] PROGMEM = "avr";
+const char c_arch_esp32[] PROGMEM = "esp32";
+const char c_arch_esp8266[] PROGMEM = "esp8266";
+const char c_arch_megaavr[] PROGMEM = "megaavr";
+const char c_arch_nrf52840[] PROGMEM = "nrf52840";
+const char c_arch_nrf52[] PROGMEM = "nrf52";
+const char c_arch_nrf51[] PROGMEM = "nrf51";
+const char c_arch_pic32[] PROGMEM = "pic32";
+const char c_arch_sam[] PROGMEM = "sam";
+const char c_arch_samd[] PROGMEM = "samd";
+const char c_arch_spresence[] PROGMEM = "spresence";
+const char c_arch_stm32[] PROGMEM = "stm32";
+const char c_arch_stm32f0[] PROGMEM = "stm32f0";
+const char c_arch_stm32f1[] PROGMEM = "stm32f1";
+const char c_arch_stm32f4[] PROGMEM = "stm32f4";
+const char c_arch_stm32g0[] PROGMEM = "stm32g0";
+const char c_arch_stm32l4[] PROGMEM = "stm32l4";
+const char c_arch_stm32u5[] PROGMEM = "stm32u5";
+const char c_area[] PROGMEM = "area";
+const char c_array[] PROGMEM = "array";
+const char c_asterisk[] PROGMEM = "*";
+const char c_bad[] PROGMEM = "bad";
+const char c_bearing[] PROGMEM = "bearing";
+const char c_began_loc_dop[] PROGMEM = "began_loc_dop";
+const char c_began_loc_lat[] PROGMEM = "began_loc_lat";
+const char c_began_loc_lon[] PROGMEM = "began_loc_lon";
+const char c_began_loc_when[] PROGMEM = "began_loc_when";
+const char c_began_motion_when[] PROGMEM = "began_motion_when";
+const char c_began_when[] PROGMEM = "began_when";
+const char c_body[] PROGMEM = "body";
+const char c_bool[] PROGMEM = "bool";
+const char c_card_attn[] PROGMEM = "card.attn";
+const char c_card_contact[] PROGMEM = "card.contact";
+const char c_card_location[] PROGMEM = "card.location";
+const char c_card_location_mode[] PROGMEM = "card.location.mode";
+const char c_card_log[] PROGMEM = "card.log";
+const char c_card_restore[] PROGMEM = "card.restore";
+const char c_card_status[] PROGMEM = "card.status";
+const char c_card_temp[] PROGMEM = "card.temp";
+const char c_card_time[] PROGMEM = "card.time";
+const char c_card_version[] PROGMEM = "card.version";
+const char c_card_voltage[] PROGMEM = "card.voltage";
+const char c_charging[] PROGMEM = "charging";
+const char c_cmd[] PROGMEM = "cmd";
+const char c_colon[] PROGMEM = ":";
+const char c_compiler[] PROGMEM = "compiler";
+const char c_comma[] PROGMEM = ",";
+const char c_connected[] PROGMEM = "connected";
+const char c_country[] PROGMEM = "country";
+const char c_cpu_cores[] PROGMEM = "cpu_cores";
+const char c_cpu_mem[] PROGMEM = "cpu_mem";
+const char c_cpu_mhz[] PROGMEM = "cpu_mhz";
+const char c_cpu_name[] PROGMEM = "cpu_name";
+const char c_cpu_vendor[] PROGMEM = "cpu_vendor";
+const char c_curly_brace_close[] PROGMEM = "}";
+const char c_curly_brace_open[] PROGMEM = "{";
+const char c_dbg_msg_about_to_sleep[] PROGMEM = "ABOUT TO SLEEP\n";
+const char c_dbg_msg_awakened_successfully[] PROGMEM = "AWAKENED SUCCESSFULLY\n";
+const char c_dbg_msg_cannot_convert_to_json[] PROGMEM = "can't convert to JSON";
+const char c_dbg_msg_card_restored[] PROGMEM = "CARD RESTORED\n";
+const char c_dbg_msg_did_not_sleep[] PROGMEM = "DIDN'T SLEEP\n";
+const char c_dbg_msg_i2c_not_active[] PROGMEM = "i2c not active";
+const char c_dbg_msg_i2c_or_serial_interface_must_be_selected[] PROGMEM = "i2c or serial interface must be selected";
+const char c_dbg_msg_i2c_receive_error[] PROGMEM = "i2c receive error\n";
+const char c_dbg_msg_i2c_transmit[] PROGMEM = "i2c transmit";
+const char c_dbg_msg_insufficient_memory[] PROGMEM = "insufficient memory";
+const char c_dbg_msg_invalid_data_received_on_serial_port_from_notecard[] PROGMEM = "invalid data received on serial port from notecard\n";
+const char c_dbg_msg_invalid_json[] PROGMEM = "invalid JSON: ";
+const char c_dbg_msg_io_bad[] PROGMEM = "bad {io}";
+const char c_dbg_msg_io_err[] PROGMEM = "{io}";
+const char c_dbg_msg_io_serial_communications_error[] PROGMEM = "serial communications error {io}";
+const char c_dbg_msg_io_timeout[] PROGMEM = "timeout {io}";
+const char c_dbg_msg_io_transaction_incomplete[] PROGMEM = "transaction incomplete {io}";
+const char c_dbg_msg_io_transaction_timeout[] PROGMEM = "transaction timeout {io}";
+const char c_dbg_msg_io_unrecognized_response_from_card[] PROGMEM = "unrecognized response from card {io}";
+const char c_dbg_msg_no_notecard[] PROGMEM = "no notecard\n";
+const char c_dbg_msg_notecard_not_responding[] PROGMEM = "notecard not responding\n";
+const char c_dbg_msg_received_only_partial_reply_after_timeout[] PROGMEM = "received only partial reply after timeout:\n";
+const char c_dbg_msg_reply_to_request_did_not_arrive_from_module_in_time[] PROGMEM = "reply to request didn't arrive from module in time\n";
+const char c_dbg_msg_request_or_response_was_lost[] PROGMEM = "request or response was lost {io}";
+const char c_dbg_msg_requesting_sleep[] PROGMEM = "requesting sleep\n";
+const char c_dbg_msg_transaction_jsonbuf_malloc_failed[] PROGMEM = "transaction: jsonbuf malloc failed\n";
+const char c_dbg_msg_unrecognized_data_from_notecard[] PROGMEM = "unrecognized data from notecard\n";
+const char c_delete[] PROGMEM = "delete";
+const char c_device[] PROGMEM = "device";
+const char c_distance[] PROGMEM = "distance";
+const char c_dop[] PROGMEM = "dop";
+const char c_edge_notefile[] PROGMEM = "_edge.qi";
+const char c_email[] PROGMEM = "email";
+const char c_ended_loc_dop[] PROGMEM = "ended_loc_dop";
+const char c_ended_loc_lat[] PROGMEM = "ended_loc_lat";
+const char c_ended_loc_lon[] PROGMEM = "ended_loc_lon";
+const char c_ended_loc_when[] PROGMEM = "ended_loc_when";
+const char c_ended_motion_when[] PROGMEM = "ended_motion_when";
+const char c_ended_when[] PROGMEM = "ended_when";
+const char c_env_default[] PROGMEM = "env.default";
+const char c_env_get[] PROGMEM = "env.get";
+const char c_err[] PROGMEM = "err";
+const char c_FAIL[] PROGMEM = "FAIL";
+const char c_false[] PROGMEM = "false";
+const char c_file[] PROGMEM = "file";
+const char c_fixed[] PROGMEM = "fixed";
+const char c_fmt_1_15g[] PROGMEM = "%1.15g";
+const char c_fmt_1_17g[] PROGMEM = "%1.17g";
+const char c_fmt_lg[] PROGMEM = "%lg";
+const char c_free[] PROGMEM = "free";
+const char c_heartbeat[] PROGMEM = "heartbeat";
+const char c_HEX[] PROGMEM = "0123456789ABCDEF";
+const char c_hex[] PROGMEM = "0123456789abcdef";
+const char c_host[] PROGMEM = "host";
+const char c_hub_get[] PROGMEM = "hub.get";
+const char c_hub_set[] PROGMEM = "hub.set";
+const char c_hub_status[] PROGMEM = "hub.status";
+const char c_humidity[] PROGMEM = "humidity";
+const char c_hyphen[] PROGMEM = "-";
+const char c_i2c[] PROGMEM = "i2c";
+const char c_inbound[] PROGMEM = "inbound";
+const char c_INF[] PROGMEM = "INF";
+const char c_inf[] PROGMEM = "inf";
+const char c_invalid[] PROGMEM = "invalid";
+const char c_jcount[] PROGMEM = "jcount";
+const char c_journey[] PROGMEM = "journey";
+const char c_lat[] PROGMEM = "lat";
+const char c_level[] PROGMEM = "level";
+const char c_loc_lat[] PROGMEM = "loc_lat";
+const char c_loc_lon[] PROGMEM = "loc_lon";
+const char c_lon[] PROGMEM = "lon";
+const char c_malloc[] PROGMEM = "malloc";
+const char c_mem[] PROGMEM = "mem";
+const char c_meters[] PROGMEM = "meters";
+const char c_minutes[] PROGMEM = "minutes";
+const char c_mode[] PROGMEM = "mode";
+const char c_motion[] PROGMEM = "motion";
+const char c_movements[] PROGMEM = "movements";
+const char c_mtime[] PROGMEM = "mtime";
+const char c_name[] PROGMEM = "name";
+const char c_NAN[] PROGMEM = "NAN";
+const char c_nan[] PROGMEM = "nan";
+const char c_newline[] PROGMEM = "\r\n";
+const char c_no_sat[] PROGMEM = "no-sat";
+const char c_note_add[] PROGMEM = "note.add";
+const char c_note_c[] PROGMEM = "note_c";
+const char c_note_event[] PROGMEM = "note.event";
+const char c_note_get[] PROGMEM = "note.get";
+const char c_note_template[] PROGMEM = "note.template";
+const char c_null[] PROGMEM = "null";
+const char c_null_paren[] PROGMEM = "(null)";
+const char c_nullstring[] PROGMEM = "";
+const char c_number[] PROGMEM = "number";
+const char c_object[] PROGMEM = "object";
+const char c_off[] PROGMEM = "off";
+const char c_org[] PROGMEM = "org";
+const char c_orientation[] PROGMEM = "orientation";
+const char c_os_family[] PROGMEM = "os_family";
+const char c_os_name[] PROGMEM = "os_name";
+const char c_os_platform[] PROGMEM = "os_platform";
+const char c_os_version[] PROGMEM = "os_version";
+const char c_outbound[] PROGMEM = "outbound";
+const char c_payload[] PROGMEM = "payload";
+const char c_point[] PROGMEM = "point";
+const char c_pressure[] PROGMEM = "pressure";
+const char c_product[] PROGMEM = "product";
+const char c_quotation_mark[] PROGMEM = "\"";
+const char c_req[] PROGMEM = "req";
+const char c_req_interface[] PROGMEM = "req_interface";
+const char c_role[] PROGMEM = "role";
+const char c_route[] PROGMEM = "route";
+const char c_scan[] PROGMEM = "scan";
+const char c_scan_format_2g[] PROGMEM = "xmcc,xmnc,xlac,xcid,xrssi";
+const char c_scan_format_3g[] PROGMEM = "xmcc,xmnc,xlac,xcid,xpsc,xrscp";
+const char c_scan_format_4g[] PROGMEM = "xmcc,xmnc,xtac,xcid,xpci,rssi,rsrp,rsrq,xband,xchan";
+const char c_scan_format_5g[] PROGMEM = "xmcc,xmnc,xtac,xcid,xpci,rssi,rsrp,rsrq,xband,xchan";
+const char c_scan_format_gps[] PROGMEM = "epochsecs,olc,hdop";
+const char c_scan_format_time[] PROGMEM = "epochsecs";
+const char c_scan_format_wifi[] PROGMEM = "xbssid,xchannel,xfreq,rssi,snr,\"ssid\"";
+const char c_seconds[] PROGMEM = "seconds";
+const char c_secs[] PROGMEM = "secs";
+const char c_serial[] PROGMEM = "serial";
+const char c_signals[] PROGMEM = "signals";
+const char c_sleep[] PROGMEM = "sleep";
+const char c_sn[] PROGMEM = "sn";
+const char c_space[] PROGMEM = " ";
+const char c_start[] PROGMEM = "start";
+const char c_status[] PROGMEM = "status";
+const char c_string[] PROGMEM = "string";
+const char c_subsystem[] PROGMEM = "subsystem";
+const char c_sync[] PROGMEM = "sync";
+const char c_synclog_notefile[] PROGMEM = "_synclog.qi";
+const char c_temperature[] PROGMEM = "temperature";
+const char c_text[] PROGMEM = "text";
+const char c_time[] PROGMEM = "time";
+const char c_track[] PROGMEM = "track";
+const char c_true[] PROGMEM = "true";
+const char c_type[] PROGMEM = "type";
+const char c_unknown[] PROGMEM = "unknown";
+const char c_usb[] PROGMEM = "usb";
+const char c_UTC[] PROGMEM = "UTC";
+const char c_utf8_bom[] PROGMEM = "\xEF\xBB\xBF";
+const char c_value[] PROGMEM = "value";
+const char c_velocity[] PROGMEM = "velocity";
+const char c_version[] PROGMEM = "version";
+const char c_voltage[] PROGMEM = "voltage";
+const char c_web_dot[] PROGMEM = "web.";
+const char c_zone[] PROGMEM = "zone";