diff --git a/encode_aprs.c b/encode_aprs.c index f46bca8..7526292 100644 --- a/encode_aprs.c +++ b/encode_aprs.c @@ -759,6 +759,63 @@ int encode_object (char *name, int compressed, time_t thyme, double lat, double } /* end encode_object */ + +/*------------------------------------------------------------------ + * + * Name: encode_message + * + * Purpose: Construct info part for APRS "message" format. + * + * Inputs: addressee - Addressed to, up to 9 characters. + * text - Text part of the message. + * id - Identifier, 0 to 5 characters. + * result_size - Ammount of space for result, provided by + * caller, to avoid buffer overflow. + * + * Outputs: presult - Stored here. + * + * Returns: Number of characters in result. + * + * Description: + * + *----------------------------------------------------------------*/ + + +typedef struct aprs_message_s { + char dti; /* : Data Type Indicator */ + char addressee[9]; /* Fixed width 9 characters. */ + char sep; /* : separator */ + char text; + } aprs_message_t; + +int encode_message (char *addressee, char *text, char *id, char *presult, size_t result_size) +{ + aprs_message_t *p = (aprs_object_t *) presult; + int n; + + p->dti = ':'; + + memset (p->addressee, ' ', sizeof(p->addressee)); + n = strlen(addressee); + if (n > (int)(sizeof(p->addressee))) n = sizeof(p->addressee); + memcpy (p->addressee, addressee, n); + + p->sep = ':'; + p->text = '\0'; + + strlcat (presult, text, result_size); + if (strlen(id) > 0) { + strlcat (presult, "{", result_size); + strlcat (presult, id, result_size); + } + + return (strlen(presult)); + +} /* end encode_message */ + + + + /*------------------------------------------------------------------ * * Name: main @@ -767,7 +824,7 @@ int encode_object (char *name, int compressed, time_t thyme, double lat, double * * Description: Just a smattering, not an organized test. * - * $ rm a.exe ; gcc -DEN_MAIN encode_aprs.c latlong.c textcolor.c ; ./a.exe + * $ rm a.exe ; gcc -DEN_MAIN encode_aprs.c latlong.c textcolor.c misc.a ; ./a.exe * *----------------------------------------------------------------*/ @@ -881,9 +938,35 @@ int main (int argc, char *argv[]) exit (EXIT_FAILURE); } + +/*********** Message. ***********/ + + + encode_message ("N2GH", "some stuff", "", result, sizeof(result)); + dw_printf ("%s\n", result); + if (strcmp(result, ":N2GH :some stuff") != 0) { dw_printf ("ERROR! line %d\n", __LINE__); errors++; } + + + encode_message ("N2GH", "other stuff", "12345", result, sizeof(result)); + dw_printf ("%s\n", result); + if (strcmp(result, ":N2GH :other stuff{12345") != 0) { dw_printf ("ERROR! line %d\n", __LINE__); errors++; } + + + encode_message ("WB2OSZ-123", "other stuff", "12345", result, sizeof(result)); + dw_printf ("%s\n", result); + if (strcmp(result, ":WB2OSZ-12:other stuff{12345") != 0) { dw_printf ("ERROR! line %d\n", __LINE__); errors++; } + + + if (errors != 0) { + text_color_set (DW_COLOR_ERROR); + dw_printf ("Encode APRS test FAILED with %d errors.\n", errors); + exit (EXIT_FAILURE); + } + text_color_set (DW_COLOR_REC); dw_printf ("Encode APRS test PASSED with no errors.\n"); exit (EXIT_SUCCESS); + } /* end main */ diff --git a/encode_aprs.h b/encode_aprs.h index b100e11..dc7b8bd 100644 --- a/encode_aprs.h +++ b/encode_aprs.h @@ -14,3 +14,4 @@ int encode_object (char *name, int compressed, time_t thyme, double lat, double float freq, float tone, float offset, char *comment, char *presult, size_t result_size); +int encode_message (char *addressee, char *text, char *id, char *presult, size_t result_size);